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