- the muscular pharynx of a rotifer, containing a chewing apparatus.
Origin of mastax
1850–55; < New Latin < Greek mástax mouth, jaws, akin to masâsthai to chew
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for mastax
The eminent naturalist we have named calls the whole organ the mastax, and states that it is composed of dense muscular fibre.Marvels of Pond-life
Henry J. Slack