noun, plural am·phi·mix·es [am-fuh-mik-seez] /ˌæm fəˈmɪk siz/.
  1. Biology. the merging of the nuclei of the sperm and egg cells; sexual reproduction.
  2. Psychoanalysis. the combining of anal and genital eroticism in the development of sexuality.

Origin of amphimixis

1890–95; amphi- + Greek míxis a mingling, equivalent to mig- (stem of mígnynai to mix) + -sis -sis
Related formsam·phi·mic·tic [am-fuh-mik-tik] /ˌæm fəˈmɪk tɪk/, adjectiveam·phi·mic·ti·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for amphimixis

Historical Examples of amphimixis

  • Amphimixis: the mingling of the germ plasm of two individuals.

  • When a fresh nucleus has been thus formed (by amphimixis) in each of the copulating cells, they again separate.

    The Wonders of Life

    Ernst Haeckel

  • Amphimixis, as we have seen, is one of the most potent forces against which the evolution of a new species has to contend.

    Parallel Paths

    Thomas William Rolleston

British Dictionary definitions for amphimixis


noun plural -mixes (-ˈmɪksiːz)
  1. true sexual reproduction by the fusion of gametes from two organismsCompare apomixis
Derived Formsamphimictic, adjective

Word Origin for amphimixis

C19: from amphi- + Greek mixis a blending, from mignunai to mingle
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

amphimixis in Medicine


  1. The union of the sperm and egg in sexual reproduction.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.