[trof-uh-lak-sis, troh-fuh-]
noun, plural troph·al·lax·es [trof-uh-lak-seez, troh-fuh-] /ˌtrɒf əˈlæk siz, ˌtroʊ fə-/.
  1. (among social insects) the exchange of nutriments or other secretions between members of a colony.

Origin of trophallaxis

1915–20; troph- + Greek állaxis exchange, equivalent to allak- (verbid stem of allássein to change; see allo-) + -sis -sis
Related formstroph·al·lac·tic [trof-uh-lak-tik, troh-fuh-] /ˌtrɒf əˈlæk tɪk, ˌtroʊ fə-/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for trophallaxis


  1. the exchange of regurgitated food that occurs between adults and larvae in colonies of social insects
Derived Formstrophallactic, adjective

Word Origin for trophallaxis

C19/20: from New Latin, from tropho- + Greek allaxis exchange, from allassein to change, from allos other
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