Trophallaxis Definition
 trŏfə-lăksĭs, trōfə- 
  trophallaxis
  
    noun
  
 The exchange of regurgitated food, glandular secretions, etc. among members of a colony of social insects.
 Webster's New World 
Origin of Trophallaxis
-  
troph(o)– Greek allaxis exchange (from allassein to exchange) (from allos other al-1 in Indo-European roots)
From American Heritage Dictionary of the English Language, 5th Edition
 
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