from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Similarity of structure between organs or parts, possibly of dissimilar function, that are related by common descent.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Similarity in structure, though of different function, because of genetic relationships
from the GNU version of the Collaborative International Dictionary of English
- n. Joint nature.
- n. The correspondence of common descent; -- a term used to supersede homology by Lankester, who also used homoplasy to denote any superinduced correspondence of position and structure in parts embryonically distinct (other writers using the term homoplasmy). Thus, there is homogeny between the fore limb of a mammal and the wing of a bird; but the right and left ventricles of the heart in both are only in homoplasy with each other, these having arisen independently since the divergence of both groups from a univentricular ancestor.
from The Century Dictionary and Cyclopedia
- n. Sameness of nature or kind.
- n. In biology, descent from a common ancestor; blood-relationship among animals.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (biology) similarity because of common evolution
Greek homogeneia, community of origin, from homogenēs, of the same race, family, kind; see homogeneous.(American Heritage® Dictionary of the English Language, Fourth Edition)