fo·ra·men

(fə-rā′mən)

n. pl. fo·ram·i·na (-răm′ə-nə) or fo·ra·mens

An opening or orifice, as in a bone or in the covering of the ovule of a plant.

[Latin forāmen, an opening, from forāre, to bore.]

fo·ram′i·nal (-răm′ə-nəl), fo·ram′i·nous (-nəs) adj.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

foramen

(fɒˈreɪmɛn)

n, pl -ramina (-ˈræmɪnə) or -ramens

(Anatomy) a natural hole, esp one in a bone through which nerves and blood vessels pass

[C17: from Latin, from forāre to bore, pierce]

foraminal adj

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

fo•ra•men

(fəˈreɪ mən)

n., pl. -ra•mens, -ram•i•na (-ˈræm ə nə)

a small opening, orifice, or perforation, as in a bone or in the ovule of a plant.

[1665–75; < Latin forāmen hole, opening =forā(re) to bore¹, pierce + -men resultative n. suffix]

fo•ram•i•nal (fəˈræm ə nl) adj.

foramen

A hole in a bone or between two body cavities.

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

foramen - a natural opening or perforation through a bone or a membranous structure

hiatus

foramen of Monro, interventricular foramen, Monro's foramen - the small opening (on both the right and left sides) that connects the third ventricle in the diencephalon with the lateral ventricle in the cerebral hemisphere

foramen magnum - the large opening at the base of the cranium through which the spinal cord passes

opening, gap - an open or empty space in or between things; "there was a small opening between the trees"; "the explosion made a gap in the wall"

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References in periodicals archive

[17,18] Sindou et al [3] have reported creation of false paths in 10 out of 200 such procedures; one in jugular foramen, two in carotid canal and seven in foramen Vesalius.

ANATOMICAL STUDY OF FORAMEN VESALIUS

The mean, standard deviation and range of the distances (mm) between the pharyngeal tubercle and foramen ovale (PT-FO), foramen lacerum (PT-FL), occipital condyle (PT-OC), carotid canal (PT-CC), jugular foramen (PT-JF) and hypoglossal canal (PT-HC); and between the foramen magnum and occipital condyle (FM-OC) and hypoglossal canal (FM-HC).

Anatomy and Clinical Importance of the Extracranial Clivus and Surrounding Structures/Anatomia e Importancia Clinica del Clivus Extracraneal y las Estructuras Circundantes

Poor cervical posture, especially upper cervical extension ("hinge neck") may lead to greater obstruction of the IJVs, as they wrap around the TPs of the C (16,17) when the jugular foramen moves posteriorly in relation to the C1.

Occult intracranial hypertension as a sequela of biomechanical internal jugular vein stenosis: A case report

These spinal fibers enter the posterior cranial fossa via the foramen magnum, merge with the cranial fibers, and then exit through the jugular foramen along with the fibers of the glossopharyngeal and vagus nerves.

Spinal Accessory Nerve Duplication: A Case Report and Literature Review

A rare instance of jugular foramen meningocele being identified in an NF1 patient on imaging is described in this paper.

Imaging Findings of Jugular Foramen Meningocele in a Neurofibromatosis Type 1 Patient

All 37 cases with tumors in anterior skull base and all 14 cases with tumors in jugular foramen received total tumor removal.

Endoscopic Approach to Remove Intra-extracranial Tumors in Various Skull Base Regions: 10-year Experience of a Single Center

Magnetic resonance imaging (MRI) showed a destructive and locally invasive tumor in the peripheral vestibular system on the left side expanding into the cerebellopontine angle, inferiorly toward the jugular foramen. The tumor measured 30 mm in the transverse diameter and had characteristic, cystic, and nodular components, dislocating the vestibulocochlear nerve (Figure 1).

Sporadic Endolymphatic Sac Tumor-A Very Rare Cause of Hearing Loss, Tinnitus, and Dizziness

(2, 3, 9, 13) Its sheath extends superiorly to the jugular foramen and inferiorly to the aortic arch and is bordered anteriorly by the styloid process and PPS, laterally by the anterior belly of the digastric muscle and the PS and medially by the lateral margin of the RPS.

A simplified approach to the spaces of the suprahyoid neck

(1) It is formed by the union of the sigmoid and inferior petrosal dural venous sinuses within the jugular foramen. (2) At its origin, there is a dilatation called the superior bulb of the jugular vein.

A rare cause of conductive hearing loss: high lateralized jugular bulb with bony dehiscence

The third finding on the same skull was the presence of an unusual large jugular foramen divided by a bridge of bone lateral to the right occipital condyle in front of condylar fossa.

UNUSUAL FINDINGS ON OCCIPITAL BONE OF DRY SKULL OF A PAKISTANI ADULT

Findings reflect right jugular foramen schwannoma, manifested by denervation of the right sternocleidomastoid and trapezius muscle as well as right portion of the tongue accounting for neuropathies of the glossopharyngeal, vagus, accessory and hypoglossal cranial nerves.

Vocal cord dysfunction with multiple cranial neuropathies

It is apparent just posteroinferior to the jugular foramen and posterior to the hypoglossal canal.

Posterior condylar foramen--anatomical variation