Tm

n : 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 [syn: {thulium}, {Tm}, {atomic number 69}]

TM

1. {Turing Machine}.

2. A formal {database specification language}.

[{Jargon File}]