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Definition of mercury

mercury

/ˈmɜːr.kjə.ri/
mer · cu · ry

Plural:mercuries
•
Adjective:mercurial
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mercury Lexical Profile

mercury Game Scores & Validity

• noun

1

A heavy, silvery-white toxic transition metal that is liquid at standard room temperature and pressure, historically used in thermometers, barometers, and fluorescent lamps (atomic number 80).

Example

"Proper safety protocols must be followed in the laboratory because exposure to high levels of mercury can cause severe neurological damage."


2

The smallest and innermost planet in the Solar System, completing an orbit around the Sun in just 88 days.

Example

"Due to its close proximity to the Sun, Mercury experiences extreme temperature fluctuations between day and night."


3

The ancient Roman god of trade, merchants, travel, and eloquence, who served as the fleet-footed messenger of the gods.

Example

"In Roman mythology, Mercury is traditionally depicted wearing winged sandals and a winged hat."

• Rhymes for mercury

Word Origin & Etymology

From Middle English 'mercurie', derived from Latin 'Mercurius', the Roman messenger god. The chemical element was named by alchemists after the god due to its mobility and fluidity, sharing an astrological symbol with the planet.

Cite this Entry


Wordmom. (2026). Definition of Mercury. In Wordmom Dictionary. Retrieved Oct 12, 2026, from https://wordmom.com/dictionary/mercury
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