thulium
noun/ˈθjuːliəm/ · /ˈθuːliəm/
Etymology From Thule (a poetic name for Scandinavia) + -ium.
1
A metallic chemical element (symbol Tm) with atomic number 69: a fairly soft, easily workable metal with a bright silvery-gray lustre.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.