'Mercurial' definitions:

Definition of 'mercurial'

From: WordNet
adjective
Liable to sudden unpredictable change; "erratic behavior"; "fickle weather"; "mercurial twists of temperament"; "a quicksilver character, cool and willful at one moment, utterly fragile the next" [syn: erratic, fickle, mercurial, quicksilver(a)]
adjective
Relating to or under the (astrological) influence of the planet Mercury; "the Mercurial canals"
adjective
Relating to or having characteristics (eloquence, shrewdness, swiftness, thievishness) attributed to the god Mercury; "more than Mercurial thievishness"
adjective
Relating to or containing or caused by mercury; "mercurial preparations"; "mercurial sore mouth"

Definition of 'Mercurial'

From: GCIDE
  • Mercurial \Mer*cu"ri*al\, n.
  • 1. A person having mercurial qualities. --Bacon. [1913 Webster]
  • 2. (Med.) A preparation containing mercury. [1913 Webster]

Definition of 'Mercurial'

From: GCIDE
  • Mercurial \Mer*cu"ri*al\, a. [L. mercurialis, fr. Mercurius Mercury: cf. F. mercuriel.]
  • 1. Having the qualities fabled to belong to the god Mercury; swift; active; sprightly; fickle; volatile; changeable; as, a mercurial youth; a mercurial temperament. [1913 Webster]
  • A mercurial man Who fluttered over all things like a fan. --Byron. [1913 Webster]
  • 2. Having the form or image of Mercury; -- applied to ancient guideposts. [Obs.] --Chillingworth. [1913 Webster]
  • 3. Of or pertaining to Mercury as the god of trade; hence, money-making; crafty. [1913 Webster]
  • The mercurial wand of commerce. --J. Q. Adams. [1913 Webster]
  • 4. Of or pertaining to, or containing, mercury; as, mercurial preparations, barometer. See Mercury, 2. [1913 Webster]
  • 5. (Med.) Caused by the use of mercury; as, mercurial sore mouth. [1913 Webster]

Synonyms of 'mercurial'

From: Moby Thesaurus