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 xenotimeplay

  Familiarity information: THULIUM used as a noun is very rare.


 Dictionary entry details 


THULIUM (noun)


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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