Mercury

n. planet closest to the sun (Astronomy); Roman god of thieves who served as a messenger for the other gods (Mythology); nickname of Freddie Mercury, famous singer from the British group Queen

n. quicksilver, heavy metallic element known for its fluidity at average temperatures, element used in thermometers and barometers to measure temperature (Chemistry)

n. messenger, courier

Mercury commonly refers to:Mercury (planet), the nearest planet to the Sun in the solar systemMercury (element), the chemical element (also called quicksilver)Mercury (mythology), or Mercurius, a Roman god
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Noun
1. (Roman mythology) messenger of Jupiter and god of commerce; counterpart of Greek Hermes
(hypernym) Roman deity
(classification) Roman mythology
2. the smallest planet and the nearest to the sun
(hypernym) inferior planet
(member-holonym) solar system

Noun
1. a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures
(synonym) quicksilver, hydrargyrum, Hg, atomic number 80
(hypernym) metallic element, metal
(substance-holonym) cinnabar
2. temperature measured by a mercury thermometer; "the mercury was falling rapidly"
(hypernym) temperature

(v. t.)
To wash with a preparation of mercury.
  

(n.)
Sprightly or mercurial quality; spirit; mutability; fickleness.
  

(n.)
One of the planets of the solar system, being the one nearest the sun, from which its mean distance is about 36,000,000 miles. Its period is 88 days, and its diameter 3,000 miles.
  

(n.)
A plant (Mercurialis annua), of the Spurge family, the leaves of which are sometimes used for spinach, in Europe.
  

(n.)
A metallic element mostly obtained by reduction from cinnabar, one of its ores. It is a heavy, opaque, glistening liquid (commonly called quicksilver), and is used in barometers, thermometers, ect. Specific gravity 13.6. Symbol Hg (Hydrargyrum). Atomic weight 199.8. Mercury has a molecule which consists of only one atom. It was named by the alchemists after the god Mercury, and designated by his symbol, /.
  

(n.)
A Latin god of commerce and gain; -- treated by the poets as identical with the Greek Hermes, messenger of the gods, conductor of souls to the lower world, and god of eloquence.
  

(n.)
A carrier of tidings; a newsboy; a messenger; hence, also, a newspaper.
  

A silver-white, poisonous metal that is a liquid at ordinary temperatures. It is commonly used in thermometers and amalgams, and has been used as an ingredient in some homeopathic medicines and in very small amounts as a preservative in viral vaccines.