or·​i·​fice | \ˈȯr-ə-fəs, ˈär-\

Definition of orifice 

: an opening (such as a vent, mouth, or hole) through which something may pass an anatomical orifice the nozzle orifice the cone built up from the cinders around the eruption orifice— R. H. Mohlenbrock

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Other Words from orifice

orificial \ ˌȯr-​ə-​ˈfi-​shəl , ˌär-​ \ adjective

Examples of orifice in a Sentence

the mouth is a bodily orifice

Recent Examples on the Web

Amid the swirls and eddies are suggestions of bodily orifices. Sharon Mizota, latimes.com, "At Blum & Poe, bow down to the ecstatic painting of Mimi Lauter," 30 May 2018 Some people crush up the pills and snort them or inject them; others put pills into various bodily orifices. Sarah Wilson As Told To Maria Carter, Woman's Day, "I Trusted My Doctor—Until I Became Addicted to Prescription Painkillers," 22 Apr. 2016 The subject matter is nominally secular, abstracted from nature: orbs and orifices, branches and seedpods, swirls of wind or wave. Sharon Mizota, latimes.com, "At Blum & Poe, bow down to the ecstatic painting of Mimi Lauter," 30 May 2018 The beads puddle and pool over the grains of warmed concrete while the secrets flee a widened orificein the face. David Roderick, San Francisco Chronicle, "State Lines: Joseph Rios’ ‘Nocturnes’," 30 May 2018 Ebola kills about half its victims, often through horrific bleeding from all the body’s orifices. New York Times, "Ebola Erupts Again in Africa, Only Now There’s a Vaccine," 11 May 2018 Felching To felch is to suck up semen out of an orifice (using a straw is optional). Sophie Saint Thomas, Allure, "11 Sex Acts You've Always Been Curious About, Defined," 15 May 2018 The power outlet was similar to the cigarette lighter orifice. Bob Weber, chicagotribune.com, "Spark plugs blowing out in lightweight engines," 8 July 2017 This is done using multiple orifice injectors to increase atomization and mixing of fuel and air. Jonathan M. Gitlin, Ars Technica, "Compression ignition engines are a big breakthrough—we got to try one," 25 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'orifice.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of orifice

15th century, in the meaning defined above

History and Etymology for orifice

Middle English, from Middle French & Late Latin; Middle French, from Late Latin orificium, from Latin or-, os mouth + facere to make, do — more at oral, do

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Time Traveler for orifice

The first known use of orifice was in the 15th century

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English Language Learners Definition of orifice

: a hole or opening and especially one in your body (such as your mouth, ear, nostril, etc.)


or·​i·​fice | \ˈȯr-ə-fəs, ˈär- \

Medical Definition of orifice 

: an opening through which something may pass

Other Words from orifice

orificial \ ˌȯr-​ə-​ˈfish-​əl, ˌär-​ \ adjective

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More from Merriam-Webster on orifice

Thesaurus: All synonyms and antonyms for orifice

Spanish Central: Translation of orifice

Nglish: Translation of orifice for Spanish Speakers

Britannica English: Translation of orifice for Arabic Speakers

Comments on orifice

What made you want to look up orifice? Please tell us where you read or heard it (including the quote, if possible).


to clear from alleged fault or guilt

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