Zinc oxide Meaning, Definition & Usage

  1. noun oxide of zinc; a white powder used as a pigment or in cosmetics or glass or inks and in zinc ointment
    philosopher's wool; flowers of zinc; philosophers' wool.

WordNet

Definitions
  1. (Chem.), the oxide of zinc, ZnO, forming a light fluffy sublimate when zinc is burned; called also flowers of zinc, philosopher's wool, nihil album, etc. The impure oxide produced by burning the metal, roasting its ores, or in melting brass, is called also pompholyx, and tutty.

Webster 1913