HyperDic: tm

English > 1 sense of the word Tm:
NOUNsubstanceTm, thulium, atomic number 69a soft silvery metallic element of the rare earth group
English > Tm: 1 sense > noun 1, substance
MeaningA 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.
Synonymsthulium, atomic number 69
Broadermetallic element, metalAny of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
Substance ofapatiteA common complex mineral consisting of calcium fluoride phosphate or calcium chloride phosphate
monaziteA reddish-brown mineral containing rare earth metals
xenotimeA brown-to-yellow mineral that is a phosphate of yttrium in crystalline form
Spanishnúmero atómico 69, Tm, tulio
Catalannúmero atòmic 69, Tm, tuli

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