D defs.my
Entry 1 sense Webster, 1913

Pterotic

· Pte·ro·tic · IPA
01 a. Of or pertaining to, or designating, a bone between the prootic and epiotic in the dorsal and outer part of the periotic capsule of many fishes.
  1. 1.
    Of or pertaining to, or designating, a bone between the prootic and epiotic in the dorsal and outer part of the periotic capsule of many fishes.(Anat.)