| oblique diameter | A measurement across the pelvic inlet from the sacroiliac joint of one side to the opposite iliopectineal eminence. Synonym: diameter obliqua. (05 Mar 2000) |
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| obstetric conjugate diameter | The diameter that represents the shortest diameter through which the head must pass in descending into the superior strait and measures, by means of X-ray, the distance from the promontory of the sacrum to a point on the inner surface of the symphysis a few millimeters below its upper margin. Synonym: obstetric conjugate diameter. (05 Mar 2000) |
| occipitofrontal diameter | The diameter of the foetal head from the external occipital protuberance to the most prominent point of the frontal bone in the midline. (05 Mar 2000) |
| occipitomental diameter | The diameter of the foetal head from the external occipital protuberance to the midpoint of the chin. (05 Mar 2000) |
| total end-diastolic diameter | Cross sectional diameter of the left ventricle including the septum and posterior wall thicknesses in diastole. (05 Mar 2000) |
| total end-systolic diameter | Cross sectional diameter of the left ventricle including the septum and posterior wall thicknesses in systole. (05 Mar 2000) |
| trachelobregmatic diameter | The diameter of the foetal head from the middle of the anterior fontanelle to the neck. (05 Mar 2000) |
| transverse diameter | The transverse diameter of the pelvic inlet, measured between the terminal lines. Synonym: diameter transversa. (05 Mar 2000) |
| external conjugate diameter | The distance in a straight line between the depression under the last spinous process of the lumbar vertebrae and the upper edge of the pubic symphysis. Synonym: Baudelocque's diameter, external conjugate diameter. (05 Mar 2000) |
| zygomatic diameter | The extreme breadth of the skull at the zygomatic arches. (05 Mar 2000) |
| anterior cranial base | The portion of the internal base of the skull, anterior to the sphenoidal ridges and limbus, in which the frontal lobes of the brain rest. Synonym: fossa cranii anterior, anterior cranial base. (05 Mar 2000) |
| anterior cranial fossa | The portion of the internal base of the skull, anterior to the sphenoidal ridges and limbus, in which the frontal lobes of the brain rest. Synonym: fossa cranii anterior, anterior cranial base. (05 Mar 2000) |
| attached cranial section | Craniotomy with a segment of the calvaria and attached soft tissues turned as a flap to expose the cranial cavity. Synonym: attached cranial section, osteoplastic craniotomy. (05 Mar 2000) |
| middle cranial fossa | A butterfly-shaped portion of the internal base of the skull posterior to the sphenoidal ridges and limbus and anterior to the crests of the petrous part of the temporal bones and dorsum sellae; it lodges the temporal lobes of the brain in the lateral portions, and the hypophysis centrally. Synonym: fossa cranii media. (05 Mar 2000) |
| cranial | <anatomy> Pertaining to the cranium or to the anterior (in animals) or superior (in humans) end of the body. Origin: L. Cranialis (18 Nov 1997) |