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strontium 90
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noun Chemistry.
a harmful radioactive isotope of strontium, produced in certain nuclear reactions and present in their fallout.
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Also called radiostrontium.
Origin of strontium 90
First recorded in 1950–55
Words nearby strontium 90
strongylosis, strontia, strontian, strontianite, strontium, strontium 90, strontium hydroxide, strontium monoxide, strontium unit, strook, strop
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use strontium 90 in a sentence
It was established that strontium-90 and cesium-137, important in fallout on land, enter the marine cycles only in minute amounts.
Atoms, Nature, and Man|Neal O. HinesMuch attention has been devoted to strontium-90 and to its availability to man by deposit on plants and soils.
Atoms, Nature, and Man|Neal O. HinesExperiments and fallout observations show that strontium-90 does not penetrate soils deeply.
Atoms, Nature, and Man|Neal O. HinesIf this is true, strontium-90 may be contained in the deep currents and eventually will be brought again to the surface.
Atoms, Nature, and Man|Neal O. Hines
Scientific definitions for strontium 90
strontium 90
A radioactive isotope of strontium having a mass number of 90 and a half-life of 28 years. Strontium 90 is the most dangerous component of the fallout from nuclear explosions because it is easily absorbed by the body. It is also used in medicine to treat cancer.
The American Heritage® Science Dictionary
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