What does TM mean in NASA?
This page is about the meanings of the acronym/abbreviation/shorthand TM in the Governmental field in general and in the NASA terminology in particular.
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What does TM mean?
- 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