noun

1. a conjugating or being conjugated; union
2. Biol. any of various types of sexual reproduction in which certain algae, fungi, etc. exchange genetic material
3. Gram.
   1. a methodical presentation or arrangement of the inflectional forms of a verb; paradigm
   2. the act or process of producing such an arrangement or paradigm
   3. a class of verbs with similar inflectional forms

Etymology: ME conjugacion < L conjugatio