fluor
English Thesaurus
1. a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light; chief source of fluorine (noun.substance)
hypernym | : | mineral, |
definition | : | solid homogeneous inorganic substances occurring in nature having a definite chemical composition (noun.substance) |
substance holonym | : | atomic number 20, ca, calcium, |
definition | : | a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals (noun.substance) |
substance holonym | : | atomic number 9, f, fluorine, |
definition | : | a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite (noun.substance) |
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