English Dictionary |
THULIUM
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Dictionary entry overview: What does thulium mean?
• THULIUM (noun)
The noun THULIUM has 1 sense:
1. a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime
Familiarity information: THULIUM used as a noun is very rare.
Dictionary entry details
Sense 1
Meaning:
A soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime
Classified under:
Nouns denoting substances
Synonyms:
atomic number 69; thulium; Tm
Hypernyms ("thulium" is a kind of...):
metal; metallic element (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)
Holonyms ("thulium" is a substance of...):
apatite (a common complex mineral consisting of calcium fluoride phosphate or calcium chloride phosphate; a source of phosphorus)
monazite (a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium)
xenotime (a brown-to-yellow mineral that is a phosphate of yttrium in crystalline form)
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