1. (noun)
technetium, Tc, atomic number 43
- a crystalline metallic element not found in nature; occurs as one of the fission products of uranium Synonyms: atomic number 43, technetium
2. (noun)
Trusteeship Council, TC
- a permanent council of the United Nations that commissions a country (or countries) to undertake the administration of a territory Synonyms: atomic number 43, technetium