Source : Webster's Revised Unabridged Dictionary (1913)

Conjugation \Con`ju*ga"tion\, n. [L. conjugatio conjugation (in
   senses 1 & 3).]
   1. the act of uniting or combining; union; assemblage. [Obs.]

            Mixtures and conjugations of atoms.   --Bentley.

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

            The sixth conjugations or pair of nerves. --Sir T.
                                                  Browne.

   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.

   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.

Source : WordNet®

conjugation
     n 1: the state of being joined together [syn: {junction}, {conjunction},
           {colligation}]
     2: the inflection of verbs
     3: the complete set of inflected forms of a verb
     4: a class of verbs having the same inflectional forms
     5: the act of pairing a male and female for reproductive
        purposes; "the casual couplings of adolescents"; "the
        mating of some species occurs only in the spring" [syn: {coupling},
         {mating}, {pairing}, {union}, {sexual union}]
     6: the act of making or becoming a single unit; "the union of
        opposing factions"; "he looked forward to the unification
        of his family for the holidays" [syn: {union}, {unification},
         {uniting}, {jointure}] [ant: {disunion}]