An"a*logue (?; 115), n. [F. &?;, fr. Gr. &?;.] 1. That which is analogous to, or corresponds with, some other thing.

The vexatious tyranny of the individual despot meets its analogue in the insolent tyranny of the many.
I. Taylor.

2. (Philol.) A word in one language corresponding with one in another; an analogous term; as, the Latin "pater" is the analogue of the English "father."

3. (Nat. Hist.) (a) An organ which is equivalent in its functions to a different organ in another species or group, or even in the same group; as, the gill of a fish is the analogue of a lung in a quadruped, although the two are not of like structural relations. (b) A species in one genus or group having its characters parallel, one by one, with those of another group. (c) 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. Dana.

• (notcomparable) Of a device, using a continuous spectrum of values as opposed to a set of discrete values; as, an analogue watch.
  
• (countable) Something that bears an analogy to something else.
  
• (countable) (Biology) An organ or structure that is similar in function to one in another kind of organism but is of dissimilar evolutionary origin.
  
• (Chemistry) A structural derivative of a parent compound that often differs from it by a single element.