n. 1. the French-speaking part of the Canadian Maritime Provinces. [ WordNet 1.5 ]

a. Of or pertaining to Acadia, or Nova Scotia. “Acadian farmers.” Longfellow. -- n. A native of Acadie. [ 1913 Webster ]

Acadian epoch (Geol.), an epoch at the beginning of the American paleozoic time, and including the oldest American rocks known to be fossiliferous. See Geology. --
Acadian owl (Zool.), a small North American owl (Nyctule Acadica); the saw-whet. [ 1913 Webster ]

a. [ From the city Accad. See Gen. x. 10. ] Pertaining to a race supposed to have lived in Babylonia before the Assyrian conquest. [ 1913 Webster ]

-- Ac*ca"di*an, n., Ac"cad n. Sayce. [ 1913 Webster ]

n. 1. (Palaeontology) the evolutionary generation of multiple specialized life forms from one ancestral form, evidenced in the fossil record. The inverse of extinction. [ PJC ]

a. [ Gr. 'adia`batos not passable; 'a priv. + dia` through + bai`nein to go. ] (Physics) Not giving out or receiving heat. -- Ad`i*a*bat`ic*al*ly, adv. [ Webster 1913 Suppl. ]

☞The adiabatic expansion of carbon dioxide from a compressed container causes the temperature of the gas to decrease rapidly below its freezing point, resulting in the familiar carbon dioxide “snow” emitted by carbon dioxide fire extinguishers. [ PJC. ]

Adiabatic line or
curve, a curve exhibiting the variations of pressure and volume of a fluid when it expands without either receiving or giving out heat. Rankine. [ 1913 Webster ]

a. [ Pref. a- not + diactinic. ] (Chem.) Not transmitting the actinic rays. [ 1913 Webster ]

‖n. [ L., fr. Gr. 'adi`anton, maidenhair; 'a priv. + diai`nein to wet. ] (Bot.) A genus of ferns, the leaves of which shed water; maidenhair. Also, the black maidenhair, a species of spleenwort. [ 1913 Webster ]

n. Religious indifference. [ 1913 Webster ]

n. [ See Adiaphorous. ] (Eccl. Hist.) One of the German Protestants who, with Melanchthon, held some opinions and ceremonies to be indifferent or nonessential, which Luther condemned as sinful or heretical. Murdock. [ 1913 Webster ]

a. Pertaining to matters indifferent in faith and practice. Shipley. [ 1913 Webster ]

n. Same as Adiaphorist. [ 1913 Webster ]

a. [ Gr. 'adia`foros; 'a priv. + dia`foros different; dia` through + fe`rein to bear. ] 1. Indifferent or neutral. Jer. Taylor. AS [ 1913 Webster ]

2. (Med.) Incapable of doing either harm or good as a medicine. Dunglison. [ 1913 Webster + AS ]

n. [ Gr. 'adiafori`a. ] Indifference. [ Obs. ] [ 1913 Webster ]

a. [ Gr. 'a priv. + dia` through + &unr_;heat. ] Not pervious to heat. [ 1913 Webster ]

{ ‖‖ } n. [ F. almadie (cf. Sp. & Pg. almadia), fr. Ar. alma'dīyah a raft, float. ] (Naut.) (a) A bark canoe used by the Africans. (b) A boat used at Calicut, in India, about eighty feet long, and six or seven broad. [ 1913 Webster ]

n. [ L. Arcadia, Gr. &unr_;. ] 1. A mountainous and picturesque district of Greece, in the heart of the Peloponnesus, whose people were distinguished for contentment and rural happiness. [ 1913 Webster ]

2. Fig.: Any region or scene of simple pleasure and untroubled quiet. [ 1913 Webster ]

Where the cow is, there is Arcadia. J. Burroughs. [ 1913 Webster ]

{ } a. [ L. Arcadius, Arcadicus, fr. Arcadia: cf. F. Arcadien, Arcadique. ] 1. Of or pertaining to Arcadia; pastoral; ideally rural; as, Arcadian simplicity or scenery. [ 1913 Webster ]

2. the dialect of Ancient Greek spoken by Arcadians. [ WordNet 1.5 ]

‖n. [ Russ. badiaga. ] (Zool.) A fresh-water sponge (Spongilla), common in the north of Europe, the powder of which is used to take away the livid marks of bruises. [ 1913 Webster ]

‖n. [ F. badiane, fr. Per. bādiān anise. ] (Bot.) An evergreen Chinese shrub of the Magnolia family (Illicium anisatum), and its aromatic seeds; Chinese anise; star anise. [ 1913 Webster ]

a. Of or pertaining to Barbados. -- n. A native of Barbados. [ 1913 Webster ]

adj. showing both bilateral and radial symmetry. some sea anemones are biradial. [ WordNet 1.5 ]

{ } a. [ Pref. bi- + radiate. ] Having two rays; as, a biradiate fin. [ 1913 Webster ]

a. Of or pertaining to Canada. -- n. A native or inhabitant of Canada. [ 1913 Webster ]

Canadian period (Geol.), A subdivision of the American Lower Silurian system embracing the calciferous, Quebec, and Chazy epochs. This period immediately follows the primordial or Cambrian period, and is by many geologists regarded as the beginning of the Silurian age, See the Diagram, under Geology. --
Canadian goose, an erroneous variant of Canada goose. [ 1913 Webster ]

a. Radiating to or from the same point. [ R. ] Coleridge. [ 1913 Webster ]

v. t. To converge to one point or focus, as light or rays. [ 1913 Webster ]

n. A conjunction or concentration of rays in one point. Bacom [ 1913 Webster ]

v. i. [ L. digladiari; di- = dis- + gladius a sword. ] To fight like gladiators; to contend fiercely; to dispute violently. [ Obs. ] [ 1913 Webster ]

Digladiating like Æschines and Demosthenes. Hales. [ 1913 Webster ]

n. Act of digladiating. [ Obs. ] “Sore digladiations and contest.” Evelyn. [ 1913 Webster ]

n. [ Pref. di- + radiation. ] The emission and diffusion of rays of light. [ 1913 Webster ]

‖n. [ NL., fr. Gr. 'epi` upon + &unr_; to draw, rend. ] (Med.) A deformity in which the urethra opens upon the top of the penis, instead of at its extremity. [ 1913 Webster ]

v. i. [ imp. & p. p. Eradiated p. pr. & vb. n. Eradiating ] [ Pref. e- + radiate. ] To shoot forth, as rays of light; to beam; to radiate. Dr. H. More. [ 1913 Webster ]

n. Emission of radiance. [ 1913 Webster ]

a. [ L. gladius sword. ] (Bot.) Sword-shaped; resembling a sword in form, as the leaf of the iris, or of the gladiolus. [ 1913 Webster ]

n. [ L., fr. gladius sword. See Glaive. ] 1. Originally, a swordplayer; hence, one who fought with weapons in public, either on the occasion of a funeral ceremony, or in the arena, for public amusement. [ 1913 Webster ]

2. One who engages in any fierce combat or controversy.

{ } a. Of or pertaining to gladiators, or to contests or combatants in general. [ 1913 Webster ]

n. The art or practice of a gladiator. [ 1913 Webster ]

n. Conduct, state, or art, of a gladiator. [ 1913 Webster ]

a. [ L. gladiatorius. ] Gladiatorial. [ R. ] [ 1913 Webster ]

n. [ L. gladiatura. ] Swordplay; fencing; gladiatorial contest. Gayton. [ 1913 Webster ]

adj. 1. of or pertaining to Grenada; as, the Grenadian capital. [ WordNet 1.5 ]

2. of or pertaining to the inhabitants of Grenada; as, Grenadian troops. [ WordNet 1.5 ]

n. a native or inhabitant of Grenada. [ WordNet 1.5 ]

‖n. [ NL., fr. Gr. "ypo` beneath + spa`n to draw, tear.] (Med.) A deformity of the penis, in which the urethra opens upon its under surface. [1913 Webster]

n. [ Infra- + red. ] (Physics) electromagnetic radiation having a wavelength of between 700 nanometers and 1 millimeter. Infrared radiation is that electromagnetic radiation lying between the visible spectrum and the longest microwaves. It may be absorbed by matter in a manner specific to the absorbing substance, causing increased vibration of molecules. The infrared absorption spectrum of a chemical compound is often very specific, and the infrared absorption spectrum is therefore used to help identify chemical substances. Infrared radiation is used in certain communication devices, such as television remote controls and communication devices between computers or between computers and peripherals. [ PJC ]

a. Between the radii, or rays; -- in Zoology, said of certain parts of radiate animals; as, the interradial plates of a starfish. [ 1913 Webster ]

n. rays of rapidly moving subatomic particles, x-reys, or gamma rays, sufficiently energetic to cause ionization when absorbed by matter. Such radiation is emitted by radioactive elements, or may be generated by highly energetic physical processes, as in stars. When absorbed by living tissue, ionizing radiation can cause mutation, cellular damage, or death. [ PJC ]

{ } n. [ From irradiant. ] [ 1913 Webster ]

1. The act of irradiating; emission of rays of light. [ 1913 Webster ]

2. That which irradiates or is irradiated; luster; splendor; irradiation; brilliancy. Milton. [ 1913 Webster ]

a. [ L. irradians, -antis, p. pr. See Irradiate. ] Irradiating or illuminating; as, the irradiant moon. Boyse. [ 1913 Webster ]

v. t. [ imp. & p. p. Irradiated p. pr. & vb. n. Irradiating ] [ L. irradiatus, p. p. of irradiate. See In- in, and Radiate. ] [ 1913 Webster ]

1. To throw rays of light upon; to illuminate; to brighten; to adorn with luster. [ 1913 Webster ]

Thy smile irradiates yon blue fields. Sir W. Jones. [ 1913 Webster ]

2. To enlighten intellectually; to illuminate; as, to irradiate the mind. Bp. Bull. [ 1913 Webster ]

3. To animate by heat or light. Sir M. Hale. [ 1913 Webster ]

4. To radiate, shed, or diffuse. [ 1913 Webster ]

A splendid façade, . . . irradiating hospitality. H. James. [ 1913 Webster ]

5. To expose to radiation of any kind, especially ionizing radiation; as, to sterilize food by irradiating it with gamma rays; one can cause mutations in bacteria by irradiating them with ultraviolet light. [ PJC ]

v. i. To emit rays; to shine. [ 1913 Webster ]

a. [ L. irradiatus, p. p. ] Illuminated; irradiated. Mason. [ 1913 Webster ]