Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Roman Mythology A god that served as messenger to the other gods and was himself the god of commerce, travel, and thievery.
  • n. The smallest of the inner planets and the one nearest the sun, having a sidereal period of revolution about the sun of 87.97 days at a mean distance of 57.91 million kilometers (35.98 million miles) and a mean radius of approximately 2,440 kilometers (1,516 miles).

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • proper n. The Roman god associated with speed, sometimes used as a messenger. He wore winged sandals. Mercury corresponded to the Greek god Hermes.
  • proper n. The planet in the solar system with the closest orbit to the Sun, named after the god; represented by ☿.

Etymologies

Middle English Mercurie, from Old French, from Latin Mercurius.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin Mercurius. (Wiktionary)

Examples

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