fo·​ra·​men | \ fə-ˈrā-mən \
plural foramina\ fə-​ˈra-​mə-​nə \ or foramens\ fə-​ˈrā-​mənz \

Definition of foramen 

: a small opening, perforation, or orifice : fenestra

Keep scrolling for more

Other Words from foramen

foraminal \ fə-​ˈra-​mə-​nᵊl \ or foraminous \ fə-​ˈra-​mə-​nəs \ adjective

Examples of foramen in a Sentence

Recent Examples on the Web

Another view of the monitor lizard skull fossil fragment, on which both the parietal and pineal foramina are visible (in yellow). Amina Khan,, "If two eyes are good, four were even better for this lizard species," 3 Apr. 2018

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

First Known Use of foramen

1672, in the meaning defined above

History and Etymology for foramen

Latin foramin-, foramen, from forare to bore — more at bore

Keep scrolling for more

Learn More about foramen

Statistics for foramen

Look-up Popularity

Time Traveler for foramen

The first known use of foramen was in 1672

See more words from the same year

Keep scrolling for more

More Definitions for foramen


fo·​ra·​men | \ fə-ˈrā-mən \
plural foramina\ -​ˈram-​ə-​nə \ or foramens\ -​ˈrā-​mənz \

Medical Definition of foramen 

: a small opening, perforation, or orifice : fenestra sense 1

Other Words from foramen

foraminal \ fə-​ˈram-​ən-​ᵊl \ adjective

More from Merriam-Webster on foramen Encyclopedia article about foramen

Comments on foramen

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


involving abstract or general statements

Get Word of the Day daily email!

Test Your Vocabulary

Liar, Liar Quiz

  • alt-5761dbe2ba986
  • Someone who pretends to be sick in order to avoid work is a:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Add Diction

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!