Definition of tridactyl in English:

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tridactyl

Pronunciation: /trʌɪˈdaktɪl/

adjective

Zoology
(Of a vertebrate limb) having three toes or fingers.
Example sentences
  • The foot is functionally tridactyl, with digits II - IV bound together and largely functioning as a single unit.
  • In the foot, the fifth toe was reduced to a single metatarsal, and the first toe was reduced and raised off the ground, leaving a functionally tridactyl foot.
  • Ornithopod prints are nearly always tridactyl with three stout and broadly spreading toes so that the resulting footprint has the outline of a trefoil.

Derivatives

tridactyly

noun
Example sentences
  • For starters, quail have three toes in a tridactyly arrangement.
  • The revised generic diagnosis includes derived features of Archaeohippus relative to Miohippus and Anchitherium such as crochets on upper cheek teeth and reduced tridactyly, which link it with Parahippus, merychippine-grade equids, hipparionines, and equines.
  • Using the JSSH classification, these 305 cases were classified into the short webbed-finger type, didactyly type, adactyly type, and tridactyly type.

Origin

Early 19th century: from tri- 'three' + Greek daktulos 'finger'.

For editors and proofreaders

Line breaks: tri|dac¦tyl

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