Search Result for "kenogenesis": 
Wordnet 3.0

NOUN (1)

1. introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution);
[syn: cenogenesis, kenogenesis, caenogenesis, cainogenesis, kainogenesis]


The Collaborative International Dictionary of English v.0.48:

Kenogenesis \Ken`o*gen"e*sis\, n. [Gr. ? new + E. genesis.] (Biol.) Modified evolution, in which nonprimitive characters make their appearance in consequence of a secondary adaptation of the embryo to the peculiar conditions of its environment; -- distinguished from palingenesis. [Written also cenogenesis and c[ae]nogenesis.] [1913 Webster]
The Collaborative International Dictionary of English v.0.48:

cenogenesis \cen`o*gen"e*sis\ n. [Gr. ? new + E. genesis.] (Biol.) The introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (as addition of the placenta in mammalian evolution); a modified evolution, in which nonprimitive characters make their appearance in consequence of a secondary adaptation of the embryo to the peculiar conditions of its environment; -- distinguished from palingenesis. [Also spelled caenogenesis and formerly kenogenesis.] [WordNet 1.5 + 1913 Webster]
WordNet (r) 3.0 (2006):

kenogenesis n 1: introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution) [syn: cenogenesis, kenogenesis, caenogenesis, cainogenesis, kainogenesis] [ant: palingenesis, recapitulation]