\Ho`mo*mor"phism\, n. [See {Homomorphous}.] 1. (Biol.) Same as {Homomorphy}. 2. (Bot.) The possession, in one species of plants, of only one kind of flowers; -- opposed to heteromorphism, dimorphism, and trimorphism. 3. (Zo["o]l.) The possession of but one kind of larv[ae] or young, as in most insects.
A map f between groups A and B is a homomorphism of A into B if
f(a1 * a2) = f(a1) * f(a2) for all a1,a2 in A.
where the *s are the respective group operations.