[ het-uh-roh-sis ]
/ ˌhɛt əˈroʊ sɪs /
the increase in growth, size, fecundity, function, yield, or other characters in hybrids over those of the parents.
Origin of heterosis
Also called hybrid vigor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for heterosis
/ (ˌhɛtəˈrəʊsɪs) /
biology another name for hybrid vigour
Word Origin for heterosis
C19: from Late Greek: alteration, from Greek heteroioun to alter, from heteros other, different
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012