noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A metallic chemical element (symbol Tc) with an atomic number of 43. uncountable
2. 2
   a crystalline metallic element not found in nature; occurs as one of the fission products of uranium wordnet

Synonyms

All synonyms

atomic number 43eka manganeseeka-manganeseekamanganeseelementgold

Example

More examples

"Technetium is rarely found in nature."

Etymology

From Ancient Greek τεχνητός (tekhnētós, “artificial, manmade”) + -ium, because it was the first manmade element synthesized.

Related phrases

technetium cowtechnetium startechnetium-99m generatoratomic numbermoly cow

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.