tungstic

[ tuhng-stik ]

/ ˈtʌŋ stɪk /

of or containing tungsten, especially in the pentavalent or hexavalent state.

Origin of tungstic

First recorded in 1790–1800; tungst(en) + -ic

The molybdic and tungstic acids combine with the soda, forming the respective salts.

A System of Instruction in the Practical Use of the Blowpipe |Anonymous
Tungstic acid may be got into solution after fusion with alkalies or alkaline carbonates.

A Textbook of Assaying: For the Use of Those Connected with Mines. |Cornelius Beringer and John Jacob Beringer
It is weighed when cold, and is the trioxide or "tungstic acid" (WO3), which contains 79.31 per cent.

A Textbook of Assaying: For the Use of Those Connected with Mines. |Cornelius Beringer and John Jacob Beringer
Next followed the discovery of tungstic acid, and in 1783 he added to his list of useful discoveries that of glycerine.

A History of Science, Volume 4(of 5) |Henry Smith Williams

“Now,” he said, when the tungstic acid had been dissolved, and he had dropped a small bar of tin into the solution.

Shadow Mountain |Dane Coolidge

tungstic

/ (ˈtʌŋstɪk) /

of or containing tungsten, esp in a high valence state

C18: from tungst ( en) + -ic