- a solution of sodium or potassium silicate which solidifies on exposure to air, used for preserving eggs and hardening artificial stone.；a tube with a glass bottom, for observing beneath the surface of water.
noun: water glass, plural noun: water glasses
- IPA[ˈwôdər ˌɡlas]
- a solution of sodium or potassium silicate. It solidifies on exposure to air and is used to ...
Oxford American Dictionary