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FLUORINE
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I. (noun)
Sense 1
Meaning:
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
Synonyms:
Classified under:
Hypernyms ("fluorine" is a kind of...):
chemical element; element (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)
gas (a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely)
halogen (any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions)
Holonyms ("fluorine" is a substance of...):
cryolite; Greenland spar (a white mineral consisting of fluorides of aluminum and sodium; a source of fluorine)
fluorapatite (a form of apatite in which fluorine predominates over chlorine)
fluor; fluorite; fluorspar (a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light; chief source of fluorine)
Context examples:
A small amount of a radioactive substance called fluorine F 18 sodium fluoride is injected into a vein.
(F 18 sodium fluoride positron emission tomography, NCI Dictionary)
A radiopharmaceutical consisting of an estradiol analogue radiolabeled with the positron-emitting isotope fluorine F 18.
(F-18 16 alpha-fluoroestradiol, NCI Thesaurus)
An amino acid analog radiolabeled with fluorine F 18, a positron emitting isotope, used as a tracer in positron emission tomography (PET).
(F-18 Fluoroethyltyrosine, NCI Thesaurus)
A radioconjugate consisting of EF5, a fluorinated derivative of etanidazole, conjugated to fluorine F 18, a positron emitting isotope.
(fluorine F 18 EF5, NCI Thesaurus)
Upon administration, fluorine F 18 FMAU is distributed and taken up by cells based on the rate of the cell's DNA synthesis.
(Fluorine F 18 d-FMAU, NCI Thesaurus)
Molecule that contains atoms of the element carbon, usually combined with itself and with atoms of one or more other element such as hydrogen, oxygen, nitrogen, sulfur, phosphorus, chlorine, or fluorine.
(Organic Chemical, NCI Thesaurus)
Due to its reactivity, fluorine is found in nature as fluorine compounds or fluorides.
(Fluoride Ion, NCI Thesaurus)
Also called F 18 sodium fluoride positron emission tomography and fluorine F 18 sodium fluoride PET.
(F-18 NaF PET, NCI Dictionary)
Fluorine ion requiring removal of one electron to return to its elemental state.
(Fluoride, NCI Thesaurus/CRCH)
Organohalogens consist of halogens, such as chlorine and fluorine, bonded with carbon and sometimes other elements.
(ALMA and Rosetta Detect Freon-40 in Space, ESO)
