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Dictionary

mer•cu•ri•al

Pronunciation: (mur-kyoor'ē-ul), [key]
—adj.
1. changeable; volatile; fickle; flighty; erratic: a mercurial nature.
2. animated; lively; sprightly; quick-witted.
3. pertaining to, containing, or caused by the metal mercury.
4. (cap.) of or pertaining to the god Mercury.
5. ( cap.) of or pertaining to the planet Mercury.

—n.
Pharm.a preparation of mercury used as a drug.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

mercurate

mercurialism

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