Dictionary
tung'stic ac'id
Chem.
1. a hydrate of tungsten trioxide, H
2WO
4·H
2O, used in the manufacture of tungsten-lamp filaments.
2. any of a group of acids derived from tungsten by the addition of acid to a soluble tungstate or to a mixture of a tungstate and a silicate, phosphate, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.