ectopterygoid

Century Dictionary and Cyclopedia

1. Pertaining to the external pterygoid bone or muscle.
2. n. An external pterygoid bone; one of the lateral bones of the palate of some animals, as reptiles. It is highly developed, for instance, in the crocodile. See Crocodilia.
3. n. In typical fishes, the external of two bones just behind the palatine, generally called pterygoid. See cut under palato-quadrate.
4. n. In anatomy, the ectopterygoid muscle.

Wiktionary

1. n. zoology A certain ventral bone of reptiles.