1. [ noun ] (chemistry) a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures
Synonyms: Hg atomic_number_80 hydrargyrum quicksilver
Related terms: metallic_element calomel cinnabar
2. [ noun ] (Roman mythology) messenger of Jupiter and god of commerce; counterpart of Greek Hermes
Related terms: Roman_deity Roman_mythology
3. [ noun ] temperature measured by a mercury thermometer

"the mercury was falling rapidly"

Related terms: temperature
4. [ noun ] (astronomy) the smallest planet and the nearest to the sun
Related terms: inferior_planet solar_system
Similar spelling:   Mercuri