DIAMETER

n. Di-a2m'e2t-u6r. Gr., Sidperpos. Lat., diametros, diametmim. Fr., diametre. Ger., D., Durchme er. It., diametro. Sp., did metro. The distance from any point at the periphery of a surface, body, or canal to the opposite point. Anterior transverse d. of the foetal head. See Bitemporal d. of the foetal head. Antero-ppsterior d. of the pelvic cavity Fr., diametre antero-poster i eur (ou droit) de Vexcavati pelvienne, diametre sacro-pubien. The distance between the middle of the symphysis pubis and the upper border of the third_ sacral vertebra. [A, 24.] Antero-posterior d. of the pelvic inlet. Fr., diametre antero-poster i eur du detroit super i eur. The distance from the upper part of the symphysis pubis to the promontory of the sacrum. Antero-posterior d. of the pelvic outlet. Fr., diametre coccy-pubien. The distance from the lower part of the symphysis pubis to the tip of the coccyx. Antero-posterior d. of the skull [Welcker], Antero-posterior metopic d. of the skull [Broca]. Fr., diametre antero-poster i eur me to pique du crane. The distance in a straight line between the metopic point and the most remote point upon the external surface of the tabular portion of the occipital bone, or between the most prominent point U, blue; U3, lull; U4, full; U4, urn; U, like ii (German). [s. 549]