Synonyms of Atomic Number 21 in English :
Antonyms of Atomic Number 21 in English
Thesaurus of Atomic Number 21 in English
Atomic Number 21
see definition of atomic number 21Synonyms of atomic number 21
1. (noun) a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite
Hypernyms of atomic number 21
1. (noun) a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite