Definition of apertural in English:

apertural

adjective

See aperture

‘Aperture is a simple opening in the center of the apertural face.’
  • ‘The two species differ in the ornamentation of the apertural margin.’
  • ‘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.’