Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: tapetum (tapeta)  tu'pee-tum
  1. An area in the pigmented layer of the choroid coat of the eye in many animals, which has an iridescent or metallic lustre and helps to make the eye visible in the dark. Sometimes applied to the whole layer of pigmented epithelium of the choroid

Derived forms: tapeta

Encyclopedia: Tapetum