Definition of turbinal in US English:

turbinal

noun

usually turbinals
Zoology Anatomy
  • Each of three thin curved shelves of bone in the sides of the nasal cavity in humans and other warm-blooded vertebrates, covered in mucous membrane.

    • ‘At least in mammals, turbinals come in at least two functional varieties.’
    • ‘The auditory bullae and the turbinals also tend to be large and complex.’
    • ‘The skulls of aardvarks are elongate and conical, and aardvarks have a more elaborate set of turbinal bones than any other mammal.’
    • ‘In mammals, the ethmoid ossifies to form the turbinals, convoluted bones in the nasal cavity that are covered by olfactory sense organs.’

Origin

Late 16th century (as an adjective in the sense ‘top-shaped’): from Latin turbo, turbin- ‘spinning top’ + -al.

Pronunciation

turbinal

/ˈtərbənl/