Relating to or characteristic of both frontal and nasal bones.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for frontonasal
Historical Examples of frontonasal
Skull of medium size (see measurements); frontonasal and mastoidal regions much enlarged; interparietal transversely narrow.A New Pocket Mouse (Genus Perognathus) from Kansas
E. Lendell Cockrum