n. [ F. aqueduc, OF. aqueduct (Cotgr.), fr. L. aquaeductus; aquae, gen. of aqua water + ductus a leading, ducere to lead. See Aqua, Duke. ] 1. A conductor, conduit, or artificial channel for conveying water, especially one for supplying large cities with water. [ 1913 Webster ]

☞ The term is also applied to a structure (similar to the ancient aqueducts), for conveying a canal over a river or hollow; more properly called an aqueduct bridge. [ 1913 Webster ]

2. (Anat.) A canal or passage; as, the aqueduct of Sylvius, a channel connecting the third and fourth ventricles of the brain. [ 1913 Webster ]

v. t. [ imp. & p. p. Beducked ] To duck; to put the head under water; to immerse. “Deep himself beducked.” Spenser. [ 1913 Webster ]

n. An educating together, of different sexes or races; -- now used almost exclusively in reference to the education males and females together. [ WordNet 1.5 +PJC ]

-- Co*ed`u*ca"tion*al a. [1913 Webster]

v. t. [ imp. & p. p. Deduced p. pr. & vb. n. Deducing. ] [ L. deducere; de- + ducere to lead, draw. See Duke, and cf. Deduct. ] 1. To lead forth. [ A Latinism ] [ 1913 Webster ]

He should hither deduce a colony. Selden. [ 1913 Webster ]

2. To take away; to deduct; to subtract; as, to deduce a part from the whole. [ Obs. ] B. Jonson. [ 1913 Webster ]

3. To derive or draw; to derive by logical process; to obtain or arrive at as the result of reasoning; to gather, as a truth or opinion, from what precedes or from premises; to infer; -- with from or out of. [ 1913 Webster ]

O goddess, say, shall I deduce my rhymes
From the dire nation in its early times? Pope. [ 1913 Webster ]

Reasoning is nothing but the faculty of deducing unknown truths from principles already known. Locke. [ 1913 Webster ]

See what regard will be paid to the pedigree which deduces your descent from kings and conquerors. Sir W. Scott. [ 1913 Webster ]

n. Inference; deduction; thing deduced. [ R. ] Dryden. [ 1913 Webster ]

n. Deducibleness. [ 1913 Webster ]

a. 1. Capable of being deduced or inferred; derivable by reasoning, as a result or consequence. [ 1913 Webster ]

All properties of a triangle depend on, and are deducible from, the complex idea of three lines including a space. Locke. [ 1913 Webster ]

2. Capable of being brought down. [ Obs. ] [ 1913 Webster ]

As if God [ were ] deducible to human imbecility. State Trials (1649). [ 1913 Webster ]

n. The quality of being deducible; deducibility. [ 1913 Webster ]

adv. By deduction. [ 1913 Webster ]

a. That deduces; inferential. [ 1913 Webster ]

v. t. [ imp. & p. p. Deducted; p. pr. & vb. n. Deducting. ] [ L. deductus, p. p. of deducere to deduct. See Deduce. ] 1. To lead forth or out. [ Obs. ] [ 1913 Webster ]

A people deducted out of the city of Philippos. Udall. [ 1913 Webster ]

2. To take away, separate, or remove, in numbering, estimating, or calculating; to subtract; -- often with from or out of. [ 1913 Webster ]

Deduct what is but vanity, or dress. Pope. [ 1913 Webster ]

Two and a half per cent should be deducted out of the pay of the foreign troops. Bp. Burnet. [ 1913 Webster ]

We deduct from the computation of our years that part of our time which is spent in . . . infancy. Norris. [ 1913 Webster ]

3. To reduce; to diminish. [ Obs. ] “Do not deduct it to days.” Massinger. [ 1913 Webster ]

adj. taken away. Opposite of added.
Syn. -- subtracted. [ WordNet 1.5 ]

a. 1. Capable of being deducted, taken away, or withdrawn. [ 1913 Webster ]

Not one found honestly deductible
From any use that pleased him. Mrs. Browning. [ 1913 Webster ]

2. Deducible; consequential. [ 1913 Webster ]

n. [ L. deductio: cf. F. déduction. ] 1. Act or process of deducing or inferring. [ 1913 Webster ]

The deduction of one language from another. Johnson. [ 1913 Webster ]

This process, by which from two statements we deduce a third, is called deduction. J. R. Seely. [ 1913 Webster ]

2. Act of deducting or taking away; subtraction; as, the deduction of the subtrahend from the minuend. [ 1913 Webster ]

3. That which is deduced or drawn from premises by a process of reasoning; an inference; a conclusion. [ 1913 Webster ]

Make fair deductions; see to what they mount. Pope. [ 1913 Webster ]

4. That which is or may be deducted; the part taken away; abatement; as, a deduction from the yearly rent in compensation for services; deductions from income in calculating income taxes.

Syn. -- See Induction. [ 1913 Webster ]

a. [ Cf. L. deductivus derivative. ] Of or pertaining to deduction; capable of being deduced from premises; deducible. [ 1913 Webster ]

All knowledge of causes is deductive. Glanvill. [ 1913 Webster ]

Notions and ideas . . . used in a deductive process. Whewell. [ 1913 Webster ]

adv. By deduction; by way of inference; by consequence. Sir T. Browne. [ 1913 Webster ]

‖n. [ L., a guide. See Deduce. ] (Zool.) The pilot whale or blackfish. [ 1913 Webster ]

n. [ Cf. F. éducabilité. ] Capability of being educated. [ 1913 Webster ]

a. [ Cf. F. éducable. ] Capable of being educated. “Men are educable.” M. Arnold. [ 1913 Webster ]

v. t. [ imp. & p. p. Educated p. pr. & vb. n. Educating ] [ L. educatus, p. p. of educare to bring up a child physically or mentally, to educate, fr. educere to lead forth, bring up (a child). See Educe. ] To bring up or guide the powers of, as a child; to develop and cultivate, whether physically, mentally, or morally, but more commonly limited to the mental activities or senses; to expand, strengthen, and discipline, as the mind, a faculty, etc.; to form and regulate the principles and character of; to prepare and fit for any calling or business by systematic instruction; to cultivate; to train; to instruct; as, to educate a child; to educate the eye or the taste.

Syn. -- To develop; instruct; teach; inform; enlighten; edify; bring up; train; breed; rear; discipline; indoctrinate. [ 1913 Webster ]

a. Formed or developed by education; as, an educated man. [ 1913 Webster ]

n. a learner who is enrolled in an educational institution.
Syn. -- student, pupil. [ WordNet 1.5 ]

n. [ L. educatio; cf. F. éducation. ] The act or process of educating; the result of educating, as determined by the knowledge skill, or discipline of character, acquired; also, the act or process of training by a prescribed or customary course of study or discipline; as, an education for the bar or the pulpit; he has finished his education. [ 1913 Webster ]

To prepare us for complete living is the function which education has to discharge. H. Spenser.

Syn. -- Education, Instruction, Teaching, Training, Breeding. Education, properly a drawing forth, implies not so much the communication of knowledge as the discipline of the intellect, the establishment of the principles, and the regulation of the heart. Instruction is that part of education which furnishes the mind with knowledge. Teaching is the same, being simply more familiar. It is also applied to practice; as, teaching to speak a language; teaching a dog to do tricks. Training is a department of education in which the chief element is exercise or practice for the purpose of imparting facility in any physical or mental operation. Breeding commonly relates to the manners and outward conduct. [ 1913 Webster ]

a. Of or pertaining to education. “His educational establishment.” J. H. Newman. [ 1913 Webster ]

n. a specialist in the theory of eduction.
Syn. -- educationist. [ WordNet 1.5 ]

n. One who is versed in the theories of, or who advocates and promotes, education.
Syn. -- educationalist. [ 1913 Webster ]

a. [ Cf. F. éducatif. ] Tending to educate; that gives education; as, an educative process; an educative experience. [ 1913 Webster ]

n. [ L. ] One who educates; a teacher. [ 1913 Webster ]

v. t. [ imp. & p. p. Educed p. pr. & vb. n. Educing ] [ L. educere; e out + ducere to lead. See Duke. ] To bring or draw out; to cause to appear; to produce against counter agency or influence; to extract; to evolve; as, to educe a form from matter. [ 1913 Webster ]

The eternal art educing good from ill. Pope. [ 1913 Webster ]

They want to educe and cultivate what is best and noblest in themselves. M. Arnold. [ 1913 Webster ]

a. Capable of being educed. [ 1913 Webster ]

n. [ L. eductum, fr. educere. ] That which is educed, as by analysis. Sir W. Hamilton. [ 1913 Webster ]

n. [ L. eductio. ] The act of drawing out or bringing into view. [ 1913 Webster ]

Eduction pipe, and
Eduction port. See Exhaust pipe and Exhaust port, under Exhaust, a. [ 1913 Webster ]

a. Tending to draw out; extractive. [ 1913 Webster ]

n. [ L., tutor. ] One who, or that which, brings forth, elicits, or extracts. [ 1913 Webster ]

Stimulus must be called an eductor of vital ether. E. Darwin. [ 1913 Webster ]

n. The state or quality of being irreducible. [ 1913 Webster ]

a. 1. Incapable of being reduced, or brought into a different state; incapable of restoration to its proper or normal condition; as, an irreducible hernia. [ 1913 Webster ]

2. (Math.) Incapable of being reduced to a simpler form of expression; as, an irreducible formula. [ 1913 Webster ]

Irreducible case (Alg.), a particular case in the solution of a cubic equation, in which the formula commonly employed contains an imaginary quantity, and therefore fails in its application.

-- Ir`re*du"ci*ble*ness, n. -- -- Ir`re*du"ci*bly, adv. [ 1913 Webster ]

v. t. To educate in a wrong manner. [ 1913 Webster ]

adj. not allowable as a tax deduction; as, political contributions are nondeductible. Opposite of deductible. [ WordNet 1.5 ]

v. t. [ imp. & p. p. Reduced p. pr. & vb. n. Reducing ] [ L. reducere, reductum; pref. red-. re-, re- + ducere to lead. See Duke, and cf. Redoubt, n. ] 1. To bring or lead back to any former place or condition. [ Obs. ] [ 1913 Webster ]

And to his brother's house reduced his wife. Chapman. [ 1913 Webster ]

The sheep must of necessity be scattered, unless the great Shephered of souls oppose, or some of his delegates reduce and direct us. Evelyn. [ 1913 Webster ]

2. To bring to any inferior state, with respect to rank, size, quantity, quality, value, etc.; to diminish; to lower; to degrade; to impair; as, to reduce a sergeant to the ranks; to reduce a drawing; to reduce expenses; to reduce the intensity of heat. “An ancient but reduced family.” Sir W. Scott. [ 1913 Webster ]

Nothing so excellent but a man may fasten upon something belonging to it, to reduce it. Tillotson. [ 1913 Webster ]

Having reduced
Their foe to misery beneath their fears. Milton. [ 1913 Webster ]

Hester Prynne was shocked at the condition to which she found the clergyman reduced. Hawthorne. [ 1913 Webster ]

3. To bring to terms; to humble; to conquer; to subdue; to capture; as, to reduce a province or a fort. [ 1913 Webster ]

4. To bring to a certain state or condition by grinding, pounding, kneading, rubbing, etc.; as, to reduce a substance to powder, or to a pasty mass; to reduce fruit, wood, or paper rags, to pulp. [ 1913 Webster ]

It were but right
And equal to reduce me to my dust. Milton. [ 1913 Webster ]

5. To bring into a certain order, arrangement, classification, etc.; to bring under rules or within certain limits of descriptions and terms adapted to use in computation; as, to reduce animals or vegetables to a class or classes; to reduce a series of observations in astronomy; to reduce language to rules. [ 1913 Webster ]

6. (Arith.) (a) To change, as numbers, from one denomination into another without altering their value, or from one denomination into others of the same value; as, to reduce pounds, shillings, and pence to pence, or to reduce pence to pounds; to reduce days and hours to minutes, or minutes to days and hours. (b) To change the form of a quantity or expression without altering its value; as, to reduce fractions to their lowest terms, to a common denominator, etc. [ 1913 Webster ]

7. (Chem.) To add an electron to an atom or ion. Specifically: To remove oxygen from; to deoxidize. (Metallurgy) To bring to the metallic state by separating from combined oxygen and impurities; as, metals are reduced from their ores. (Chem.) To combine with, or to subject to the action of, hydrogen or any other reducing agent; as, ferric iron is reduced to ferrous iron; aldehydes can be reduced to alcohols by lithium hydride; -- opposed to oxidize. [ 1913 Webster +PJC ]

8. (Med.) To restore to its proper place or condition, as a displaced organ or part; as, to reduce a dislocation, a fracture, or a hernia. [ 1913 Webster ]

Reduced iron (Chem.), metallic iron obtained through deoxidation of an oxide of iron by exposure to a current of hydrogen or other reducing agent. When hydrogen is used the product is called also iron by hydrogen. --
To reduce an equation (Alg.), to bring the unknown quantity by itself on one side, and all the known quantities on the other side, without destroying the equation. --
To reduce an expression (Alg.), to obtain an equivalent expression of simpler form. --
To reduce a square (Mil.), to reform the line or column from the square. [ 1913 Webster ]

Syn. -- To diminish; lessen; decrease; abate; shorten; curtail; impair; lower; subject; subdue; subjugate; conquer. [ 1913 Webster ]

n. Reduction. Milton. [ 1913 Webster ]

a. [ L. reducens, p. pr. of reducere. ] Tending to reduce. -- n. A reducent agent. [ 1913 Webster ]

n. 1. One who, or that which, reduces. [ 1913 Webster ]

2. (Mach.) (a) A contrivance for reducing the dimensions of one part so as to fit it to another, as a reducing coupling, or a device for holding a drilling a chuck. (b) A reducing motion. (c) A reducing valve. (d) A hydraulic device for reducing pressure and hence increasing movement, used to transmit the load from the hydraulic support of the lower shackle to the lever weighing apparatus in some kinds of heavy testing machines. [ Webster 1913 Suppl. ]

3. (Photog.) A reducing agent, either a developer or an agent for reducing density. [ Webster 1913 Suppl. ]

4. (Chem.) a reducing agent. [ PJC ]

a. Capable of being reduced. [ 1913 Webster ]

n. Quality of being reducible. [ 1913 Webster ]

a & n. from Reduce. [ 1913 Webster ]

Reducing furnace (Metal.), a furnace for reducing ores. --
Reducing pipe fitting, a pipe fitting, as a coupling, an elbow, a tee, etc., for connecting a large pipe with a smaller one. --
Reducing valve, a device for automatically maintaining a diminished pressure of steam, air, gas, etc., in a pipe, or other receiver, which is fed from a boiler or pipe in which the pressure is higher than is desired in the receiver. [ 1913 Webster ]

n. (Chem.) a substance that causes reduction of another substance in a chemical reaction, as by donating electrons or adding hydrogen atoms; as, lithium hydride is a powerful reducing agent. [ PJC ]

v. t. [ L. reductus, p. p. of reducere. See Reduce. ] To reduce. [ Obs. ] W. Warde. [ 1913 Webster ]

n. The quality of being reducible; reducibleness. [ 1913 Webster ]

n. [ F. réduction, L. reductio. See Reduce. ] 1. The act of reducing, or state of being reduced; conversion to a given state or condition; diminution; conquest; as, the reduction of a body to powder; the reduction of things to order; the reduction of the expenses of government; the reduction of a rebellious province. [ 1913 Webster ]

2. (Arith. & Alg.) The act or process of reducing. See Reduce, v. t., 6. and To reduce an equation, To reduce an expression, under Reduce, v. t. [ 1913 Webster ]

3. (Astron.) (a) The correction of observations for known errors of instruments, etc. (b) The preparation of the facts and measurements of observations in order to deduce a general result. [ 1913 Webster ]

4. The process of making a copy of something, as a figure, design, or draught, on a smaller scale, preserving the proper proportions. Fairholt. [ 1913 Webster ]

5. (Logic) The bringing of a syllogism in one of the so-called imperfect modes into a mode in the first figure. [ 1913 Webster ]

6. (Chem. & Metal.) The act, process, or result of reducing{ 7 }; as, the reduction of iron from its ores; the reduction of an aldehyde into an alcohol. [ 1913 Webster ]

7. (Med.) The operation of restoring a dislocated or fractured part to its former place. [ 1913 Webster ]

Reduction ascending (Arith.), the operation of changing numbers of a lower into others of a higher denomination, as cents to dollars. --
Reduction descending (Arith.), the operation of changing numbers of a higher into others of a lower denomination, as dollars to cents. [ 1913 Webster ]

Syn. -- Diminution; decrease; abatement; curtailment; subjugation; conquest; subjection. [ 1913 Webster ]

a. [ Cf. F. réductif. ] Tending to reduce; having the power or effect of reducing. -- n. A reductive agent. Sir M. Hale. [ 1913 Webster ]