thulium-170
thulium-170
[′thü·lē·əm ‚wən′sev·ən·tē] (nuclear physics)
The radioactive isotope of thulium, with mass number 170; used as a portable x-ray source.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.