Yttrium Definition
ĭtrē-əm
noun
A rare, trivalent, silvery, metallic chemical element found in combination in gadolinite, monazite sand, samarskite, etc.: used in phosphors, alloys, etc.: symbol, Y; at. no. 39
Webster's New World
(physics) An isotope of yttrium, 9039Y, that is used in radiotherapy.
Wiktionary
Synonyms:
- atomic number 39
- y
Origin of Yttrium
-
From Ytterby, (literally, "outer village") a town in Sweden.
From Wiktionary
From yttria
From American Heritage Dictionary of the English Language, 5th Edition
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