[trof-uh-lak-sis, troh-fuh-]
noun, plural trophallaxes [trof-uh-lak-seez, troh-fuh-] .
(among social insects) the exchange of nutriments or other secretions between members of a colony.

1915–20; troph- + Greek állaxis exchange, equivalent to allak- (verbid stem of allássein to change; see allo-) + -sis -sis

trophallactic [trof-uh-lak-tik, troh-fuh-] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
trophallaxis (ˌtrɒfəˈlæksɪs)
the exchange of regurgitated food that occurs between adults and larvae in colonies of social insects
[C19/20: from New Latin, from tropho- + Greek allaxis exchange, from allassein to change, from allos other]

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Example sentences
They also practice trophallaxis, the mutual exchange of food and other desirable substances between members of the colony.
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