[ fawr-uh-see ]
/ ˈfɔr ə si /

noun Zoology.

(among insects and arachnids) a nonparasitic relationship in which one species is carried about by another.

Nearby words

  1. phooey,
  2. phorate,
  3. phorbol,
  4. phorcys,
  5. phoresis,
  6. phoria,
  7. phormium,
  8. phoro-,
  9. phoro-optometer,
  10. phoronid

Origin of phoresy

1920–25; < New Latin phoresia < Greek phórēs(is) a wearing (phorē-, verbid stem of phoreîn, durative of phérein to bear1 + -sis -sis) + -ia -y3 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for phoresy


/ (ˈfɒrəsɪ) /


an association in which one animal clings to another to ensure movement from place to place, as some mites use some insects

Word Origin for phoresy

C20: from New Latin phoresia, from Greek phorēsis, from pherein to carry

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

Word Origin and History for phoresy



1914, from French phorésie (1896), from Greek phoresis "being carried," from pherein "to carry" (see infer).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for phoresy


[ fôrĭ-sē ]


A symbiotic relationship, especially among arthropods and some fishes, in which one organism transports another organism of a different species.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.