Definition of postnasal in English:

postnasal

noun

  • 1Chiefly Palaeontology. In a fish: a bone or bony plate located posterior to the nasal bone in the snout. rare.

  • 2Zoology. In a reptile: a scale on the side of the head, situated either immediately behind the nostril, or posterior to the nasal scale.

adjective

  • Situated or occurring behind or posterior to the nasal aperture or the nasal cavity.

Origin

Mid 19th century; earliest use found in Spencer Baird (1823–1887), zoologist and scientific administrator. From post- + nasal. With use as adjective compare prenasal.

Pronunciation

postnasal

/ˌpəʊs(t)ˈneɪzl/