noun thu·li·um \ˈthü-lē-əm, ˈthyü-\

Definition of THULIUM

:  a soft silvery metallic element of the rare-earth group — see element table

Origin of THULIUM

New Latin, from Latin Thule
First Known Use: 1879


noun thu·li·um \ˈth(y)ü-lē-əm\   (Medical Dictionary)

Medical Definition of THULIUM

:  a trivalent metallic element of the rare-earth group—symbol Tm; see element table


Next Word in the Dictionary: thuluthPrevious Word in the Dictionary: thulite pinkAll Words Near: thulium
May 22, 2015
nepotism Hear it
favoritism based on kinship
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears