sulfur

sul·fur also sul·phur   (sŭl'fər)    n.   Symbol S A pale yellow nonmetallic element occurring widely in nature in several free and combined allotropic forms. It is used in black gunpowder, rubber vulcanization, the manufacture of insecticides and pharmaceuticals, and in the preparation of sulfur compounds such as hydrogen sulfide and sulfuric acid. Atomic number 16; atomic weight 32.066; melting point (rhombic) 112.8°C, (monoclinic) 119.0°C; boiling point 444.6°C; specific gravity (rhombic) 2.07, (monoclinic) 1.957; valence 2, 4, 6. See Table at element. tr.v.   sul·fured also sul·phured, sul·fur·ing also sul·phur·ing, sul·furs also sul·phurs To treat with sulfur or a compound of sulfur. [Middle English, from Anglo-Norman sulfre, from Latin sulfur.]

sulfur 

Main Entry: ¹sul·fur
Variant: or chiefly British sul·phur /'s&l-f&r/
Function: noun
: a nonmetallicelement that occurs either free or combined especially in sulfides and sulfates, is a constituent of proteins, exists in several allotropic forms including yellow orthorhombic crystals, resemblesoxygen chemically but is less active and more acidic, and is used especially in the chemical and paper industries, in rubber vulcanization, and in medicine for treating skin diseases —symbolS; —see ELEMENT table

sulfur sul·fur or sul·phur (sŭl'fər)
n.
Symbol S
A yellow nonmetallic element occurring widely in nature in several free and combined allotropic forms and used in the manufacture of pharmaceuticals and many sulfur compounds, especially sulfuric acid. Atomic number 16; atomic weight 32.066; melting point (rhombic) 112.8°C; (monoclinic) 119.0°C; boiling point 444.6°C; specific gravity (rhombic) 2.07; (monoclinic) 1.957; valence 2, 4, 6.

sulfur also sulphur   (sŭl'fər)  Pronunciation Key  Symbol S A pale-yellow, brittle nonmetallic element that occurs widely in nature, especially in volcanic deposits, minerals, natural gas, and petroleum. It is used to make gunpowder and fertilizer, to vulcanize rubber, and to produce sulfuric acid. Atomic number 16; atomic weight 32.066; melting point (rhombic) 112.8°C; (monoclinic) 119.0°C; boiling point 444.6°C; specific gravity (rhombic) 2.07; (monoclinic) 1.957; valence 2, 4, 6. See Periodic Table.