Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A highly unstable radioactive element, the heaviest of the halogen series, that resembles iodine in solution. Its longest lived isotope has a mass number of 210 and has a half-life of 8.3 hours. Atomic number 85; melting point 302°C; boiling point 337°C; valence probably 1, 3, 5, 7. See Table at element.
Wiktionary
- n. A highly radioactive chemical element (symbol At), one of the halogens, with atomic number 85.
WordNet 3.0
- n. a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
Etymologies
- From Ancient Greek ἄστατος ("unstable") + -ine. (Wiktionary)
- Greek astatos, unstable; see astasia + -ine2. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“In collaboration with Traude Cless-Bernert, she discovered the natural occurrence of isotopes of astatine by observation of their radioactive alpha particle decays.”
“The other halogens are: fluorine, an extremely reactive gas; chlorine, a reactive, heavy gas; iodine, a relatively inactive solid; and astatine.”
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“O2 (g) • all halogens: fluorine - F2 (g) chlorine - Cl2 (g) bromine - Br2 (l) iodine - I2 (s) astatine - At2 (s) polyatomic elements include: • • phosphorous - P4 (s) • sulfur - S8 (s) all other nonmetals are monatomic and solid, • except bromine Chemistry 20 - Unit 3 Page 2”
Lists
These user-created lists contain the word ‘astatine’.
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Logolepsy
"Luciferous Logolepsy is a collection of over 9,000 obscure English words. Though the definition of an 'English' word might seem to be straightforward, it is not. There exist so many adopted, deriv...
Anschauung, Areopagus, Argus, Briarean, Dei gratia, Dei judicium, Deo volente, Duecento, Foehn, Geflugelte Worte, Gegenschein, Hakenkreuz and 9230 more...
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Chemical Elements
A list of chemical elements
hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon, sodium, magnesium and 106 more...
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moving constants
insteadfast, assid tests, isentropic, swerveless, scedastic, stableful, fixure, compoise, still, withoutcessant, Cassini ovals, conchoid and 54 more...
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The Elements
hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon, sodium, magnesium and 99 more...
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Words of Standing
steed, stool, estancia, stage, stance, staunch, stanch, stanchion, stanza, stative, stator, stay and 180 more...
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Elementary
Words that can be formed from the official abbreviations of the names of chemical elements, starting with the elements themselves.
arsenic, astatine, bismuth, carbon, copper, iron, neon, silicon, tin, xenon
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Beautiful Words
Ones that look good and sound good, regardless of meaning.
saturnine, astatine, byzantium, suture, dresden, arcanum, eris, resonance, catharsis, dementia, coquette, blight and 4 more...
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Jargon
litotes, jargon, cannula, onomatopoeic, plasma, gadolinium, seaborgium, astatine, iridium, spectroscopy, spectrometry, polonium and 26 more...
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WoRd CHeMiSTrY
Chemical element names made up exclusively of symbols from the Periodic Table of Elements (only 12 can be so fashioned). Individual wordpage comments will show the necessary capitalization, e.g., T...
arsenic, astatine, bismuth, carbon, copper, iron, krypton, neon, phosphorus, silicon, tin, xenon
Tweets
Looking for tweets for astatine.
oroboros At. Dec 15, 2007
oroboros Can be spelled with the Periodic Table of Elements symbols: AsTaTiNe Dec 12, 2006