a. [ Pref. bi- + conjugate, a. ] (Bot.) Twice paired, as when a petiole forks twice. Gray. [ 1913 Webster ]

a. [ L. conjugatus, p. p. or conjugare to unite; con- + jugare to join, yoke, marry, jugum yoke; akin to jungere to join. See Join. ] 1. United in pairs; yoked together; coupled. [ 1913 Webster ]

2. (Bot.) In single pairs; coupled. [ 1913 Webster ]

3. (Chem.) Containing two or more compounds or radicals supposed to act the part of a single one. [ R. ] [ 1913 Webster ]

4. (Gram.) Agreeing in derivation and radical signification; -- said of words. [ 1913 Webster ]

5. (Math.) Presenting themselves simultaneously and having reciprocal properties; -- frequently used in pure and applied mathematics with reference to two quantities, points, lines, axes, curves, etc. [ 1913 Webster ]

Conjugate axis of a hyperbola (Math.), the line through the center of the curve, perpendicular to the line through the two foci. --
Conjugate diameters (Conic Sections), two diameters of an ellipse or hyperbola such that each bisects all chords drawn parallel to the other. --
Conjugate focus (Opt.) See under Focus. --
Conjugate mirrors (Optics), two mirrors so placed that rays from the focus of one are received at the focus of the other, especially two concave mirrors so placed that rays proceeding from the principal focus of one and reflected in a parallel beam are received upon the other and brought to the principal focus. --
Conjugate point (Geom.), an acnode. See Acnode, and Double point. --
Self-conjugate triangle (Conic Sections), a triangle each of whose vertices is the pole of the opposite side with reference to a conic. [ 1913 Webster ]

n. [ L. conjugatum a combining, etymological relationship. ] 1. A word agreeing in derivation with another word, and therefore generally resembling it in signification. [ 1913 Webster ]

We have learned, in logic, that conjugates are sometimes in name only, and not in deed. Abp. Bramhall. [ 1913 Webster ]

2. (Chem.) A complex compound formed from the non-covalent union of two other comounds, behaving as a single compound. [ R. ] [ 1913 Webster ]

v. i. (Biol.) To unite in a kind of sexual union, as two or more cells or individuals among the more simple plants and animals. [ 1913 Webster ]

v. t. [ imp. & p. p. Conjugated; p. pr. & vb. n. Conjugating. ] 1. To unite in marriage; to join. [ Obs. ] Sir H. Wotton. [ 1913 Webster ]

2. (Gram.) To inflect (a verb), or give in order the forms which it assumes in its several voices, moods, tenses, numbers, and persons. [ 1913 Webster ]

adj. 1. (Chem.) (Chem.) formed by the union of two compounds; as, a conjugated protein.
Syn. -- conjugate. [ WordNet 1.5 ]

2. joined together especially in a pair or pairs.
Syn. -- conjugate, coupled. [ WordNet 1.5 ]

3. (Chem.) containing two or more double bonds each separated from the other by a single bond; -- of an organic compound or of the double bonds thus arranged. Conjugated double bonds have chemical and electronic properties different from those of isolated double bonds.
Syn. -- conjugate. [ WordNet 1.5 +PJC ]

n. [ L. conjugatio conjugation (in senses 1 & 3). ] 1. the act of uniting or combining; union; assemblage. [ Obs. ] [ 1913 Webster ]

Mixtures and conjugations of atoms. Bentley. [ 1913 Webster ]

2. Two things conjoined; a pair; a couple. [ Obs. ] [ 1913 Webster ]

The sixth conjugations or pair of nerves. Sir T. Browne. [ 1913 Webster ]

3. (Gram.) (a) The act of conjugating a verb or giving in order its various parts and inflections. (b) A scheme in which are arranged all the parts of a verb. (c) A class of verbs conjugated in the same manner. [ 1913 Webster ]

4. (Biol.) A kind of sexual union; -- applied to a blending of the contents of two or more cells or individuals in some plants and lower animals, by which new spores or germs are developed. [ 1913 Webster ]

a. relating to conjugation. Ellis. [ 1913 Webster ]

a. (Geom.) Having the two things that are conjugate parts of the same figure; as, self-conjugate triangles. [ 1913 Webster ]