Definition of apertural in English:

apertural

adjective

  • See aperture

    • ‘The two species differ in the ornamentation of the apertural margin.’
    • ‘Aperture is a simple opening in the center of the apertural face.’
    • ‘Thus, the presence or absence of an apertural slit does not necessarily have significance for high-level taxonomy.’
    • ‘In summary, based mainly on its apertural features, the following new species is questionably assigned to genus Ringicula.’
    • ‘In many ammonites the terminal body chamber is relatively large, inflated, and with a constricted aperture or apertural appendages.’