ATOMIC NUMBER 23(noun)Did you mean?Synonyms RhymesAlso try..atomicnumberDefinitions There is 1 meaning of the phrase Atomic Number 23. Atomic Number 23 - as a noun A soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite Synonyms (Exact Relations)vvanadium14A-Z Proximitiesatoll5atolls6atom6atom-bombatomic10 Atomic Number 23 atomical12atomically17atomicities15atomicity16atomics11