prepollex

[pri-pol-eks]

noun, plural pre·pol·li·ces

[pri-pol-uh-seez] /prɪˈpɒl əˌsiz/.

a rudimentary additional digit on the preaxial side of the thumb of certain amphibians and mammals.

Origin of prepollex

From New Latin, dating back to 1885–90; see origin at pre-, pollex

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for prepollex

Historical Examples of prepollex

Breeding males have dark brown nuptial excrescences on the prepollex.
Neotropical Hylid Frogs, Genus Smilisca
William E. Duellman
The digits (and metacarpals) are considered by Ritland to be 1-4, in addition to the prepollex, rather than 2-5.
The Ancestry of Modern Amphibia: A Review of the Evidence
Theodore H. Eaton