Definition of spiracular in English:

spiracular

adjective

Zoology
  • See spiracle

    • ‘The lantern nerves, which appear to be modified spiracular nerves, do not synapse directly on the photocytes, but rather in the tracheal system, which in insects delivers air directly to the tissues.’
    • ‘Two of these tissues, which can be readily dissected, are the anterior spiracular glands of third instar larvae and the male ejaculatory bulb.’
    • ‘The spiracular notch is deep and forms a well-defined break between skull table and cheek.’
    • ‘In many cases, the transitional bones and the cheek are separated by a deep extension of the old spiracular slit, referred to in tetrapods as the ‘otic notch.’’
    • ‘It does seem to be associated with the spiracular groove; but such an ossification is also present in, for example, Cladistia.’

Pronunciation

spiracular

/spʌɪˈrakjʊlə/