foramen
Americannoun
noun
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An opening or short passage, especially in the body.
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◆ The large opening in the base of the skull through which the spinal cord passes is called the foramen magnum (măg|||PRIMARY_STRESS|||nəm).
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◆ The opening in the septum between the right and left atria of the heart, present in the fetus but usually closed soon after birth, is the foramen ovale (ō-văl|||PRIMARY_STRESS|||ē, -vā|||PRIMARY_STRESS|||lē, -vä|||PRIMARY_STRESS|||-).
Other Word Forms
Etymology
Origin of foramen
1665–75; < Latin forāmen hole, opening, equivalent to forā ( re ) to bore 2 “pierce” + -men resultative noun suffix
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A patent foramen ovale - or PFO - which is a small hole between the top two chambers of the heart.
From BBC • Jan. 1, 2025
It had a prominent pineal foramen -- a hole in the top of its head that many lizard species use to sense sunlight and judge the length of daylight hours.
From Science Daily • Nov. 29, 2023
The shape of the opening at the base of its skull—the foramen magnum—suggested Sahelanthropus balanced its head on top of a vertical neck, similar to upright walkers such as today’s humans.
From Science Magazine • Aug. 24, 2022
The axon of an olfactory neuron extends from the basal surface of the epithelium, through an olfactory foramen in the cribriform plate of the ethmoid bone, and into the brain.
From Textbooks • Jun. 19, 2013
Third unicuspid usually smaller than fourth; upper unicuspids usually with pigmented ridge extending from apices medially to cingula, uninterrupted by antero-posterior groove; post-mandibular foramen usually absent.
From Speciation of the Wandering Shrew by Findley, James S.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
