from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Having one or more apertures
from The Century Dictionary and Cyclopedia
- Having apertures; specifically, having reference to that division of the brachiopod genus Spirifer, termed the Aperturati, which is typified by the species S. aperturatus and characterized by the plications on the fold and sinus of the valves.
aperture + -ate (Wiktionary)