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Wordnet 3.0

NOUN (2)

1. a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures;
[syn: mercury, quicksilver, hydrargyrum, Hg, atomic number 80]

2. 100 grams;
[syn: hectogram, hg]



WordNet (r) 3.0 (2006):

Hg
    n 1: a heavy silvery toxic univalent and bivalent metallic
         element; the only metal that is liquid at ordinary
         temperatures [syn: mercury, quicksilver, hydrargyrum,
         Hg, atomic number 80]
    2: 100 grams [syn: hectogram, hg]