plural of purple box

a very dark shade of purple.

plural of French purple

A pigment made from barium copper disilicate (“BaCuSi₂O₆”), the first artificial purple pigment, used by Chinese for over 2 millennia before dying out at the end of the Han dynasty.

A pigment made from barium copper disilicate (“BaO·CuO·(SiO₂)₂”), used in ancient China.

Alternative form of bromocresol purple

violet noise

Synonym of amethyst

A route reserved for an aircraft on which a member of a royal family is flying.

Synonym of purple airway