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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.


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


(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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


A hole in a bone or between two body cavities.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.foramen - a natural opening or perforation through a bone or a membranous structureforamen - a natural opening or perforation through a bone or a membranous structure
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"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Clinical importance of ligamentous and osseous structures in the cervical uncovertebral foraminal region.
Multilevel degenerative spine disease; spondylolisthesis, spondylolysis, Motor deficit(any grade), arachnoiditis, cauda equina syndrome, Previous lumbar spine surgery, Central spinal canal stenosis or foraminal stenosis from other origins, Myelographic contrast allergy, and local anesthetic allergy, History of psychiatric illness or history of substance abuse, Pregnancy, Poorly controlled hypertension and Poorly controlled diabetes (HbA1c>7), Morbid obesity.
The position of the mandibular canal was analyzed through the axial CT, which showed that the vertical distance between crestal margin and inferior alveolar nerve at mental foraminal level on the right and left side of the lesion was 19.06 and 23.50 mm respectively.
Estos segmentos no se encuentran disenados filogeneticamente para soportar esta carga mecanica, lo que lleva a una perdida de la funcion y a un cambio estructural (hipertrofia osea, formacion quistes facetarios y desarrollo de estenosis foraminal).
Early endoscopic spine surgery involved the extra-foraminal and neural foraminal area, resulting in extensive anatomical investigation.
After the spinal level was determined again with fluoroscopy, secondary stenosis and foraminal stenosis were treated using Kerrison Rong or ultrasonic bone shaver and then total laminectomy and bilateral foraminotomy were performed.
A wide variety of unusual lesions that can cause neural foraminal widening need to be taken into consideration, including the following: (1) neoplastic lesions, such as benign/malignant peripheral nerve sheath tumors (PNSTs), solitary bone plasmacytoma (SBP), chondroid chordoma, superior sulcus tumor; and (2) metastatic and non-neoplastic lesions, such as infectious process (tuberculosis, hydatid cyst), aneurysmal bone cyst (ABC), synovial cyst, traumatic pseudomeningocele, arachnoid cyst or vertebral artery tortuosity (63).
Decompression was extended to the foraminal areas and lateral recesses by excision of the hypertrophic ligamentumflavum, which compressed the spinal nerve roots, and undercutting the medial side of the facet joints.
The t- test was performed to analyze the difference the duration time of puncture and foraminal height under different position.
Analgesia preemptiva com dexametasona ou ibuprofeno em tratamentos e retratamentos endodonticos com ampliacao foraminal. Universidade Estadual de Campinas; 2014.
MRI of the lumbar spine demonstrated multiple, multilevel T1 and T2 hypointense lesions and pathologic compression fracture with posterior expansile mass at L1 causing severe spinal and neural foraminal stenosis (Figure 2).