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radon
[ rey-don ]
/ ˈreɪ dɒn /
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noun Chemistry.
a chemically inert, radioactive gaseous element produced by the decay of radium: emissions produced by outgassing of rock, brick, etc. are a health hazard. Symbol: Rn; atomic number: 86; atomic weight: 222.
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Words nearby radon
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
How to use radon in a sentence
How to deal with mold and mildew in the bathroomDon’t panic if radon has been detected.
How — and when — to check indoor air quality in your home|Laura Daily|October 17, 2021|Washington PostIf you aren’t comfortable using a home test kit and want to find a pro, contact your state radon program.
How — and when — to check indoor air quality in your home|Laura Daily|October 17, 2021|Washington PostAlthough there are generalists who may be able to conduct a broad assessment, you’ll probably need a specialist in mold, radon, VOCs or other pollutants to deal with any problems, says Bender, who works with the Indoor Air Hygiene Institute.
How — and when — to check indoor air quality in your home|Laura Daily|October 17, 2021|Washington PostWith federal assistance, Florida has acted on the recommendations of dozens of local health departments to investigate environmental pollution, like groundwater contamination or radon levels in the air.
“A Complete Failure of the State”: Authorities Didn’t Heed Researchers’ Calls to Study Health Effects of Burning Sugar Cane|by Lulu Ramadan, The Palm Beach Post|August 19, 2021|ProPublica
British Dictionary definitions for radon
radon
/ (ˈreɪdɒn) /
noun
a colourless radioactive element of the rare gas group, the most stable isotope of which, radon-222, is a decay product of radium. It is used as an alpha particle source in radiotherapy. Symbol: Rn; atomic no: 86; half-life of 222 Rn: 3.82 days; valency: 0; density: 9.73 kg/m³; melting pt: –71°C; boiling pt: –61.7°C
Word Origin for radon
C20: from radium + -on
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for radon
radon
[ rā′dŏn ]
n. Symbol Rn
A radioactive, largely inert gaseous element formed by the radioactive decay of radium and used as a radiation source in radiotherapy and research; its most stable isotope is Rn 222 with a half-life of 3.82 days. Atomic number 86.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for radon
radon
[ rā′dŏn ]
Rn
A colorless, odorless, radioactive element in the noble gas group. It is produced by the radioactive decay of radium and occurs in minute amounts in soil, rocks, and the air near the ground. Radon is used as a source of radiation for the treatment of cancer and other diseases. Its most stable isotope is Rn 222 with a half-life of 3.82 days. Atomic number 86; melting point -71°C; boiling point -61.8°C; specific gravity (solid) 4. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for radon
radon
[ (ray-don) ]
A colorless, odorless, radioactive gas that is produced by the decay of radium in the soil.
notes for radon
Radon seeping through the ground and into buildings is a major source of indoor air pollution and may represent a significant risk for lung cancer.
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.