biparietal diameter


bi·pa·ri·e·tal di·am·e·ter

the diameter of the fetal head between the two parietal eminences.

bi·pa·ri·e·tal di·am·e·ter

(bī'pă-rī'ĕ-tăl dī-am'ĕ-tĕr) The diameter of the fetal head between the two parietal eminences.

biparietal diameter

Abbreviation: BPD
The transverse distance between the parietal eminences on each side of the head (about 9.25 cm).See also: diameter