fluorine
Use Fluorine in a sentence
in, -ɪn, ˈflɔr-, ˈfloʊr- noun Chemistry.
the most reactive nonmetallic element, a pale-yellow, corrosive, toxic gas that occurs combined, especially in fluorite, cryolite, phosphate rock, and other minerals. Symbol: F; atomic weight: 18.9984; atomic number: 9.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To fluorine
Collins
World English Dictionary
fluorine or fluorin (ˈflʊəriːn, ˈflʊərɪn) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| a toxic pungent pale yellow gas of the halogen group that is the most electronegative and reactive of all the elements, occurring principally in fluorspar and cryolite: used in the production of uranium, fluorocarbons, and other chemicals. Symbol: F; atomic no: 9; atomic wt: 18.9984032; valency: 1; density: 1.696 kg/m³; relative density: 1.108; freezing pt: --219.62°C; boiling pt: --188.13°C | |
| fluorin or fluorin | |
| —n | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Fluorine
is always a great word to know.
So is zedonk. Does it mean:
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| the offspring of a zebra and a donkey. |
Etymonline
Word Origin & History
fluorine
1813, non-metallic element, coined by Eng. chemist Sir Humphry Davy (1778-1829) from fluorspar ("calcium fluoride," modern fluorite), the name of the mineral where it was first found, from L. fluor, originally meaning "a flowing, flow" (see fluent). The mineral name was given
by Georg Agricola in 1546, translating Ger. name flusse, so called because it melts easily.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
fluorine fluor·ine (fl&oobreve;r'ēn', -ĭn, flôr'-)
n.
Symbol F
A highly corrosive poisonous gaseous halogen element, the most reactive of all the elements. Atomic number 9; atomic weight 18.9984; melting point -219.62°C; boiling point -188.14°C (at 1 atmosphere); specific gravity of liquid 1.108 (at boiling point); valence 1.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
fluorine (fl r'ēn') Pronunciation Key
Symbol F A pale-yellow, poisonous, gaseous element of the halogen group. It is highly corrosive and is used to separate certain isotopes of uranium and to make refrigerants and high-temperature plastics. It is also added in fluoride form to the water supply to prevent tooth decay. Atomic number 9; atomic weight 18.9984; melting point -223°C; boiling point -188.14°C; specific gravity of liquid 1.108 (at boiling point); valence 1. See Periodic Table. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The membrane under development uses fluorine materials that respond to pH levels in the water.
At high pH, the fluorine groups become charged and protect the membrane from chlorine and clogging.
Fluorine is a naturally-occurring, pale yellow-green gas with a sharp odor.
Many easily available elements such as sodium and fluorine are dangerous if touched, inhaled or allowed to combine with others.
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