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Noun hg has 2 senses
- mercury, quicksilver, hydrargyrum, Hg, atomic number 80 - a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures
--1 is a kind of metallic element, metal
--1 is a substance of cinnabar; calomel, mercurous chloride
- hectogram, hg - 100 grams
--2 is a kind of metric weight unit, weight unit
--2 is a part of kilogram, kg, kilo
--2 has parts: dekagram, decagram, dkg, dag
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