pigmentum nigrum

pig·men·tum ni·grum

(pig-men'tŭm nī'grŭm),
Melanin of the choroid coat of the eye.

pig·men·tum ni·grum

(pig-men'tŭm nī'grŭm)
Melanin of the choroid coat of the eye.

pigmentum nigrum

(pĭg-mĕn′tŭm nī′grŭm) [L., black paint]
The black pigment of the lamina vitrea of the choroid of the eye.