blende

Etymology
From, from (because it resembles galena).

Noun

 * 1)  sphalerite a naturally-occurring sulfide of zinc

Derived terms

 * blendous
 * ruby blende

Etymology 1
Borrowed from.

Noun

 * 1) metallic sulphide, in particular

Etymology
Borrowed from, from.

Noun

 * 1)  aperture the opening of a photographic lens that can be adjusted to control the amount of light passing through