Dictionary![]() ![]() het•er•o•sisPronunciation: (het"u-rō'sis), [key] —n. Genetics. the increase in growth, size, fecundity, function, yield, or other characters in hybrids over those of the parents. Also called hybrid vigor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
|