polywater

[ pol-ee-waw-ter, -wot-er ]
/ ˈpɒl iˌwɔ tər, -ˌwɒt ər /

noun Chemistry.

a subtance mistakenly identified as a polymeric form of water, now known to be water containing ions from glass or quartz.

Origin of polywater

First recorded in 1965–70; poly(meric) + water