atomic number 21 (0 synonym found)

We don't have synonyms for atomic number 21 yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are atomic number 1, atomic number 2 and atomic number 11.

We don't have any synonyms for atomic number 21 yet.

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atomic number 1  ·  atomic number 2  ·  atomic number 11  ·  atomic number 20  ·  atomic number 22  ·  atomic number 23

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Definition of atomic number 21:

(n) : a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the scandinavian mineral thortveitite
Definition of atomic number 21:

(n) : a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the scandinavian mineral thortveitite
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