a prefix occurring in loanwords from Greek (amphibious); on this model, used with the meaning “two,” “both,” “on both sides,” in the formation of compound words: amphiaster.

Nearby words

  1. amperian,
  2. amperometric,
  3. amperometric titration,
  4. ampersand,
  5. amphetamine,
  6. amphiaraus,
  7. amphiarthrosis,
  8. amphiaster,
  9. amphibaric,
  10. amphibia

Origin of amphi-

< Greek, combining form of amphí on both sides; cognate with Latin amb(i)- ambi-, Albanian mbë; akin to Old English ymb(e)- around Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for amphi-



on both sides; at both ends; of both kindsamphipod; amphitrichous; amphibious

Word Origin for amphi-

from Greek

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 amphi-


before a vowel amph-, word-forming element from Greek amphi- "both, of both kinds, on both sides, around," comb. form of amphi "round about, around;" cognate with Latin ambi- (see ambi-).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for amphi-



On both sides:amphicentric.

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