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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 ?
Accessory foramens were noted in four mandibles (2.
Amac: Bu calismadaki amac morfolojik olarak foramen mentalenin pozisyon tiplerini, varyasyonunu ve asimetrisini arastirmaktir.
Three foramens were present anterior, three posterior, and four in the oblique line.
Opening (foramen) existing in one or both plates of the thyroid cartilage, which may or may not contain a neurovascular component is known as Foramen Thyroideum (FT).
The anterior lacerate foramen is formed by two foramens (the optic foramen and the orbitorotundum foramen).
Unilateral or bilateral processes in the cervical vertebrae are common in some groups of mammals (including Homo), and the costal rudiments are associated with the vertebral or vertebrarterial foramens (Lessertisseur and Saban, 1967).
Another probable cause that explains the foramens and accessory canal's presence is the conduct of Serres development, this formation was described by the French anatomist Antoine Etienne Reynaud Augustin Serres, in 1817.
and this coincides with the observations in this study, where the entirety of the analyzed jaws presented visible and permeable bilateral foramens and canals.
Finally, no accessory or multiple foramens were observed in this study.
The orientation and position of the mental foramen is important to performing anesthetic block prior to clinical procedures in lower-anterior teeth and also to preserve the integrity of the mental nerve trunk in surgical interventions (Julian et al.
Were observed supranumerary foramens of the IOE with presence of the double IOF in 50 cases, being bilateral in 08 specimens, left and right side 21 specimens for each side.
and variations in size and in symmetry (Bolini & Del Sol; Berge & Bergman), as well as, has been reported the presence of accessory supranumerarios foramens (Gruber; Berry, 1975; Bergman et al.