technetium

Meanings

1. 1
   noun

   the radioactive metallic chemical element with symbol Tc and atomic number 43, all of whose isotopes are unstable

   Technetium-99m is widely used as a radioactive tracer in medical imaging.

Named in 1947 from Greek tekhnetos ("artificial") + -ium because it was the first element to be produced artificially. Earlier proposed names included masurium.

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