Definition of pollex in English:


Syllabification: pol·lex
Pronunciation: /ˈpälˌeks

noun (plural pollices /ˈpäləˌsēz/)

Anatomy & Zoology
  • The innermost digit of a forelimb, especially the thumb in primates.
    More example sentences
    • The forefeet and hindfeet have 3 large digits; the pollex and hallux are reduced in size or absent and the fifth finger is very small.
    • Four clawed digits are found on each forefoot (the pollex or ‘thumb’ is small and bears a nail); the hind foot in most has five clawed digits (but sometimes the hallux or first toe has a nail).
    • All eusauropods, in contrast, are characterized by a shortened manus in which each digit bears two or fewer phalanges, and only the pollex bears an ungual.


mid 19th century: from Latin, literally 'thumb or big toe'.

More definitions of pollex

Definition of pollex in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
elaborate ornamentation of a vocal melody