Engelsk navneord: Tm | |||
1. | Tm (om masse el. substans) 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 | ||
Termer med samme betydning (synonymer) | atomic number 69, thulium | ||
Mindre specifikke termer | metal, metallic element | ||
Vedrærer disse overordnede termer | apatite, monazite, xenotime | ||