Definition of pteroid in US English:

pteroid

adjective

Botany
  • Having the characteristics of a fern of the genus Pteris or the family Pteridaceae; resembling a fern, filicoid.

noun

Botany
  • A pteroid fern.

adjective

  • 1Chiefly Palaeontology. Especially of the shell of a bivalve mollusc: resembling a wing. rare.

  • 2Palaeontology. Designating various body parts of a pterosaur associated with the small anterior flight membrane, especially a small, pointed bone that extends from the carpal region towards the shoulder and supports this membrane.

noun

  • Palaeontology. The pteroid bone of a pterosaur.

Origin

Mid 19th century; earliest use found in Charles Lyell (1797–1875), geologist. From scientific Latin pteroides, adjective from classical Latin pteris fern + -oīdēs. With the use as noun compare scientific Latin Pteroides, plural noun<br>mid 19th century; earliest use found in Robert Mayne (1808–1868). From ancient Greek πτερόν feather, wing + -oid, in sense A. 1 after scientific Latin pteroides, adjective.

Pronunciation

pteroid

/ˈtɛrɔɪd/