Definitions

1. adjective

Having or producing two kinds of scales or scutes, especially on the belly and the back.

“The amphibian’s skin was amphidesmous, with smooth scales on its back and rougher ones on its belly.”

2. noun

A scale or scute, especially one of the two kinds on an amphidesmous animal.

“The amphidesmous structures on the turtle’s skin helped protect it from predators.”