Etymology: Origin obscure: perhaps < thrackv. + sat for set = ‘set in compact mass’.
Obsolete. rare.
(See quot. 1678.)
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the world > the earth > minerals > ore > [noun] > metal ore
metal orea1387
metal stone1612
thracksat1678
minera1755
1678 E. PhillipsNew World of Words (new ed.) Thracksat, a Chymical term for a Metal, which is yet in the Mine. [Hence (printed -scat) in Bailey, Crabb, Worcester, Cassell, etc.]
This entry has not yet been fully updated (first published 1912; most recently modified version published online June 2018).