tantalite

noun

tan·​ta·​lite ˈtan-tə-ˌlīt 

: a mineral consisting of a heavy dark lustrous oxide of tantalum and usually other metals (such as iron or manganese)

Word History

First Known Use

1805, in the meaning defined above

Kids Definition

tantalite

noun

tan·​ta·​lite ˈtant-ᵊl-ˌīt 

: a mineral consisting of a heavy dark shiny oxide of tantalum and other metals