pseudothumb

Etymology

From pseudo- + thumb.

pseudothumb means A digit on a vertebrate that resembles but is not a thumb. Lexicurio rates it Sui generis — a strength score of 95 out of 100.

noun

A digit on a vertebrate that resembles but is not a thumb.“But a panda's forepaws are specially adapted for manipulating bamboo stems, with a modified elongated wrist bone forming the pseudothmb covered by a fleshy pad.”