fluorine
English Thesaurus
1. 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)
| hypernym | : | chemical element, element, |
| definition | : | any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter (noun.substance) |
| hypernym | : | gas, |
| definition | : | a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely (noun.substance) |
| hypernym | : | halogen, |
| definition | : | any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions (noun.substance) |
| substance meronym | : | cryolite, greenland spar, |
| definition | : | a white mineral consisting of fluorides of aluminum and sodium; a source of fluorine (noun.substance) |
| substance meronym | : | fluorapatite, |
| definition | : | a form of apatite in which fluorine predominates over chlorine (noun.substance) |
| substance meronym | : | fluor, fluorite, fluorspar, |
| definition | : | a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light; chief source of fluorine (noun.substance) |
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