Search Result for "heterosis": 
Wordnet 3.0

NOUN (1)

1. (genetics) the tendency of a crossbred organism to have qualities superior to those of either parent;
[syn: heterosis, hybrid vigor]


The Collaborative International Dictionary of English v.0.48:

Heterosis \Het`e*ro"sis\, n. [NL., fr. Gr. ? alteration, fr. ? other, different.] (Rhet.) A figure of speech by which one form of a noun, verb, or pronoun, and the like, is used for another, as in the sentence: "What is life to such as me?" --Aytoun. [1913 Webster]
WordNet (r) 3.0 (2006):

heterosis n 1: (genetics) the tendency of a crossbred organism to have qualities superior to those of either parent [syn: heterosis, hybrid vigor]