Possessing no hue; being black, white or gray.

无色的(极指黑、白或灰色的)。

Transmitting light without separating it into the spectral colors, as a lens.

【理】消色差的；消色的。

Not easily stained by dyes.

不易染色的。

(Scale) having no accidentals.

【乐】(指音阶)没有临时记号的；全音的。