What specialized term describes the hinged, folding fang system found in all viperids?

Answer

Solenoglyphous

All members of the Viperidae family possess solenoglyphous dentition, referring to the mechanism where the fangs are hinged and fold back against the roof of the mouth when not in use.

What specialized term describes the hinged, folding fang system found in all viperids?
classificationreptilesnakeviper