Definition of opposability in English:

opposability

noun

Zoology
  • The property of a digit of being opposable.

Origin

Mid 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From opposable + -ity: see -bility.

Pronunciation

opposability

/əˌpəʊzəˈbɪlɪti/