Tc

noun

1. a crystalline metallic element not found in nature; occurs as one of the fission products of uranium

   noun.substance

   Synonyms atomic number 43 technetium

   Source: WordNet 3.0

2. a permanent council of the United Nations that commissions a country (or countries) to undertake the administration of a territory

   noun.group

   Synonyms trusteeship council

   Source: WordNet 3.0