Definitions for thuliumˈθu li əm

This page provides all possible meanings and translations of the word thulium

Princeton's WordNet

  1. thulium, Tm, atomic number 69(noun)

    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

Wiktionary

  1. thulium(Noun)

    a metallic chemical element (symbol Tm) with an atomic number of 69.

  2. Origin: Thule (as a poetic way to say Scandinavia) + -ium

Webster Dictionary

  1. Thulium(noun)

    a rare metallic element of uncertain properties and identity, said to have been found in the mineral gadolinite

Freebase

  1. Thulium

    Thulium is a chemical element that has the symbol Tm and atomic number 69. It is the second least abundant of the lanthanides after promethium, which is only found in trace quantities on Earth. Thulium is an easily workable metal with a bright silvery-gray luster. It is fairly soft and slowly tarnishes in air. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices and in solid-state lasers. It has no significant biological role and is not particularly toxic.

U.S. National Library of Medicine

  1. Thulium

    Thulium. An element of the rare earth family of metals. It has the atomic symbol Tm, atomic number 69, and atomic weight 168.93.


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