hg
1. [ noun ] (chemistry) a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures
Synonyms: mercury hydrargyrum atomic_number_80 quicksilver
Related terms: metallic_element calomel cinnabar
2. [ noun ] 100 grams
Synonyms: hectogram
Related terms: metric_weight_unit kilogram dekagram