peri-


a prefix meaning “about” or “around” (perimeter, periscope), “enclosing” or “surrounding” (pericardium), and “near” (perigee, perihelion), appearing in loanwords from Greek (peripeteia); on this model, used in the formation of compound words (perimorph).

Origin of peri-

< Greek, prefixal use of perí (adv. and preposition)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for peri-

peri-


prefix

enclosing, encircling, or aroundpericardium; pericarp; perigon
near or adjacentperihelion

Word Origin for peri-

from Greek peri around, near, about
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

Medicine definitions for peri-

peri-


pref.

Around; about; enclosing:perimysium.
Near:perinatal.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for peri-

peri-


A prefix that means: “around” (as in pericardium,) or “near” (as in perihelion).
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.