Definitions
A soft rare-earth chemical element used in lasers, alloys, and research.
Word origin
From Ytterby + -ium, named after Ytterby, Sweden, the same etymological source as yttrium, terbium, and erbium.
Used in a sentence
“The lanthanides samarium, europium and ytterbium possess relatively stable and long-known dispositive states.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Element 70”9 letters
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