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Radon

/ˈɹeɪdɒn/

The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.

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📖 Definitions of "Radon"

noun

1
The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.

🔄 Synonyms of "Radon"

2 synonyms found via WordNet and Google Books.

Word	Definition
rnnoun	Richard Nixon, the 37th U.S. president (1913-1994, served 1969-1974).
atomic number 86noun	a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health

💡 Words with a Similar Meaning to "Radon"

Found via reverse dictionary — words that share a conceptual meaning.

Word	Definition
rnnoun	Richard Nixon, the 37th U.S. president (1913-1994, served 1969-1974).
atomic number 86noun	a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health
exposurenoun	(uncountable) The condition of being exposed, uncovered, or unprotected.
guidelinenoun	A non-specific rule or principle that provides direction to action or behaviour.
exradionoun	(obsolete) Obsolete form of radon (“radon-222”), an isotope of radon (element 86). [The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.]
radeonnoun	(obsolete) Obsolete form of radon (“radon-222”); an isotope of radon. [The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.]
röntgeniumnoun	Rare spelling of roentgenium. [A transuranic chemical element (symbol Rg) with atomic number 111.]
roentgeniumnoun	A transuranic chemical element (symbol Rg) with atomic number 111.
rutherfordiumnoun	A transuranic chemical element (symbol Rf) with an atomic number of 104.
rheniumnoun	A metallic chemical element (symbol Re) with an atomic number of 75: a heavy, silvery-gray transition metal.
rubidiumnoun	(uncountable) The chemical element (symbol Rb) with an atomic number of 37. It is a soft, highly reactive alkali metal.
rhodiumnoun	A rare, hard, silvery-white, inert metallic chemical element (symbol Rh) with an atomic number of 45.
roentgennoun	Alternative form of röntgen. [(physics) a unit of exposure to ionizing radiation]
radiorheniumnoun	radioactive rhenium
rhenatenoun	(inorganic chemistry) The anion ReO₄⁻; any salt containing this ion.
rutheniumnoun	A metallic chemical element (symbol Ru) with an atomic number of 44.
rutherfordnoun	An obsolete unit of radioactivity (symbol: rd), defined as the activity of a quantity of radioactive material in which one million nuclei decay per second.
radiorutheniumnoun	radioactive ruthenium.
röntgen raynoun	Alternative form of Roentgen-ray. [(obsolete) An X-ray.]
ronnabitnoun	(computing) One octillion (10²⁷) bits. SI symbol: Rb.