n. That which is analogous to, or corresponds with, some other thing.n. A word in one language corresponding with one in another; an analogous term.”n. n. An organ which is equivalent in its functions to a different organ in another species or group, or even in the same group.n. A species in one genus or group having its characters parallel, one by one, with those of another group.n. A species or genus in one country closely related to a species of the same genus, or a genus of the same group, in another: such species are often called representative species, and such genera, representative genera.