pterotic

About 0.01 uses per million words.

Meaning

1. adjective Of or relating to a bone between the prootic and epiotic in the dorsal and outer part of the periotic capsule of many fishes.
2. noun The pterotic bone.

Similar words

pterionic epipteric petromastoid ponticular pterygoidal perioplic peristomial propterygial periostic perotic

Often followed by

and ridge is bone in