micronucleus
| suboccipitobregmatic diameter | The diameter of the foetal head from the lowest posterior point of the occipital bone to the centre of the anterior fontanelle. (05 Mar 2000) |
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| diagonal conjugate diameter | The anteroposterior dimension of the inlet that measures the clinical distance from the promontory of the sacrum to the lower margin of the symphysis pubica. Synonym: conjugata diagonalis, diagonal conjugate diameter, false conjugate. (05 Mar 2000) |
| diameter | The length of a straight line passing through the centre of a circle and connecting opposite points on its circumference, hence the distance between two specified opposite points on the periphery of a structure such as the cranium or pelvis. (18 Nov 1997) |
| diameter mediana | Distance from the promontory of the sacrum to the upper posterior edge of the pubic symphysis. Synonym: anteroposterior diameter of the pelvic inlet, conjugata vera, conjugate axis, conjugate diameter of pelvic inlet, diameter mediana, internal conjugate, true conjugate. (05 Mar 2000) |
| diameter obliqua | A measurement across the pelvic inlet from the sacroiliac joint of one side to the opposite iliopectineal eminence. Synonym: diameter obliqua. (05 Mar 2000) |
| diameter transversa | The transverse diameter of the pelvic inlet, measured between the terminal lines. Synonym: diameter transversa. (05 Mar 2000) |
| 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) |
| 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) |