1 Grammar the variation of the form of a verb in an inflected language such as Latin, by which the voice, mood, tense, number, and person are identified:it was the conjugation of verbs he found most difficult
[count noun] the class in which a verb is put according to the manner of this variation:a past participle of the first conjugation
2 technical the formation or existence of a link between things, in particular:
Biology the temporary union of two bacteria or unicellular organisms for the exchange of genetic material:immunity may be transferable by conjugation to other bacterial strains
Biology the fusion of two gametes, especially when they are of a similar size.
chiefly Biochemistry the combination of two substances:toxic compounds eliminated from the body by conjugation with glutathione
Chemistry the sharing of electron density between nearby multiple bonds in a molecule.
Mathematics the solution of a problem by transforming it into an equivalent problem of a different form, solving this, and then reversing the transformation.
late Middle English(in sense 1): from Latin conjugatio(n-), from conjugare 'join together' (see conjugate)