[ awr-uh-fis, or- ]
/ ˈɔr ə fɪs, ˈɒr- /


an opening or aperture, as of a tube or pipe; a mouthlike opening or hole; mouth; vent.

Origin of orifice

1535–45; < Middle French < Late Latin ōrificium, equivalent to Latin ōr- (stem of ōs) mouth + -i- -i- + -fic-, combining form of facere to make, do1 (see -fic) + -ium noun suffix

Related forms

or·i·fi·cial [awr-uh-fish-uh l, or-] /ˌɔr əˈfɪʃ əl, ˌɒr-/, adjective

Can be confused

office orifice
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for orifice

British Dictionary definitions for orifice


/ (ˈɒrɪfɪs) /


mainly Technical an opening or mouth into a cavity; vent; aperture

Word Origin for orifice

C16: via French from Late Latin ōrificium, from Latin ōs mouth + facere to make
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 orifice


[ ôrə-fĭs ]


An opening, especially to a cavity or passage of the body; a mouth or vent.

Related forms

or′i•ficial (-fĭshəl) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.