1881 B. G. Wilder in Science (N.Y.) 19 Mar. 125/1Ental, and ectal are here first proposed as substitutes for the more or less ambiguous words inner and outer, interior and exterior [etc.].
1889 A. H. BuckRef. Handbk. Med. Sci. VIII. 111 The ental surface of the pia.
This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2018).