noun \tek-ˈnē-sh(ē-)əm\

Definition of TECHNETIUM

:  a radioactive metallic element obtained especially from nuclear fuel as a product of uranium fission and used as a diagnostic radiopharmaceutical


New Latin, from Greek technētos artificial, from technasthai to devise by art, from technē
First Known Use: circa 1946

Rhymes with TECHNETIUM


noun \tek-ˈnē-sh(ē-)əm\   (Medical Dictionary)

Medical Definition of TECHNETIUM

: a metallic element that is obtained by bombarding molybdenum with deuterons or neutrons and in the fission of uranium and that is used in medicine in the preparation of radiopharmaceuticals—symbol Tc; see pertechnetate; element table


noun    (Concise Encyclopedia)

Metallic chemical element, one of the transition elements, chemical symbol Tc, atomic number 43. All its isotopes are radioactive (see radioactivity); some occur in trace amounts in nature as nuclear fission products of uranium. Its isotope technetium-97 was the first element artificially produced (1937; see cyclotron). Technetium-99, a fission product of nuclear reactors that emits gamma rays, is the most-used tracer isotope in nuclear medicine. Technetium resembles platinum in appearance and manganese and rhenium in chemical behaviour. It is also used as a metallurgical tracer and in corrosion-resistant products.


Next Word in the Dictionary: technetronic
Previous Word in the Dictionary: techne
All Words Near: technetium

Seen & Heard

What made you want to look up technetium? Please tell us where you read or heard it (including the quote, if possible).

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More