What does the word foramen mean?
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An aperture or perforation through a bone or a membranous structure. See also foramina.
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Any cavity, pierced through and through. Also, the orifice of a canal.
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[ Latin] A hole or perforation. F. caecum, ( 1) f. in frontal bone conveying a vein to the longitudinal sinus; ( 2) f. at root of tongue, indicating the remains of the thyroglossal duct. F. lacerum anterius, the sphenoidal fissure. F. lacerum medium, a gap between the petrous bone and great wing of the sphenoid, filled with cartilage. F. lacerum posterius, the jugular f. F. magnum, f. in the occipital bone for the passage of the medulla, spinal accessory nerve, and vertebral arteries. F. oesophageum, f. in the diapharagm for the passage of the oesophagus. F. ovale, ( 1) f. in the great wing of sphenoid for transmitting the inferior maxillary and small petrosal nerves, and small menigeal artery; ( 2) f. in the heart-septum of the fetus, effecting communication between the right and left auricles. F. quadratum, f. in diaphragm transmitting the vena cava. F. rotundum, f. in great wing of sphenoid transmitting the superior maxillary nerve. F. spinosum, f. in great wing of sphenoid, transmitting the middle meningeal artery. F. Thebesii, one of several foramina in the heart returning venous blood directly to the right auricle. See also Cotyloid f., etc.
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