(1):

(n.) The act of conjugating a verb or giving in order its various parts and inflections.

(2):

(n.) the act of uniting or combining; union; assemblage.

(3):

(n.) Two things conjoined; a pair; a couple.

(4):

(n.) A scheme in which are arranged all the parts of a verb.

(5):

(n.) A class of verbs conjugated in the same manner.

(6):

(n.) 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.