Phys. Pl. bregmata. [a. Gr. βρέγμα front of the head.] The region of the skull where the frontal and the two parietal bones join; the sinciput; in infancy, before the sutures are closed, constituting the anterior fontanel. (Also formerly spoken of as two regions, the right and left bregmata.) Hence Bregmatic a., pertaining to the bregma.
1578. Banister, Hist. Man, I. 8. This Bregma is to be understode the vpper part of the head foreward, nigh to the Coronall Suture.
1754–64. Smellie, Midwif., III. 41. Through one of the Bregmata.
1787. C. B. Trye, in Med. Comm., II. 145. Over the whole right bregma.
1857. Bullock, Cazeaux’ Midwif., 219. The great or anterior fontanelle is also called … the bregmatic fontanelle.
1878. Bartley, trans. Topinard’s Anthrop., iv. 133. The bregmatic fontanelle … is always closed before two years and a half of age.
