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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.


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


(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.


A hole in a bone or between two body cavities.
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"
References in periodicals archive ?
Assessment of the appearance, location and morphology of mandibular lingual foramina using cone beam computed tomography.
The data of enhanced arteries and nutrient foramina were shown as median (Q[sub]1, Q[sub]3) and analyzed with Wilcoxon signed-rank test.
Background: The evaluation of periapical radiographic evidence of these foramina might be helpful to avoid hemorrhaging of the highly vascularized regions of the floor of the mouth.
Anterior surface of sacrum include the ala, sacral promontory, five vertebral bodies and four pairs of pelvic sacral foramina.
Antiguamente se le denominaba foramina infraorbitaria (Otte y Venero, 1979) y fue ilustrado por primera vez por Galotta y Galota (1988) en un atlas de osteologia de la llama.
Nadiren servikal rotasyonlar sirasinda, foramina icindeki norovaskuler yapilarin kompresyonuna bagli olarak semptomatik hale gelebilir.
2] Usually, one main nutrient artery enters the shaft obliquely through the nutrient foramina leading to nutrient canal within the cortical part of shaft.
9 Among the primates observed, humans exhibit the most anteriorly positioned foramina magna.
Com-plete ossification of STSL with formation of bony foramina is the most recognized predisposing factor for the compression of suprascapular nerve at the suprascapular notch.
These particular mammals evolved bipedal locomotion and anteriorly positioned foramina magna independently, or as a result of convergent evolution, says Gabrielle Russo, who is a postdoctoral research fellow at Northeast Ohio Medical University and lead researcher of the study.