ATOMIC NUMBER 71(noun) Did you mean: Synonyms Rhymes Also try: numberingatomicallyDefinitions There is 1 meaning of the phrase Atomic Number 71. Atomic Number 71 - as a noun A trivalent metallic element of the rare earth group; usually occurs in association with yttrium Synonyms (Exact Relations)lulutecium 12lutetium 10A-Z Proximitiesatoll 5atolls 6atom 6atom-bombatomic 10 Atomic Number 71 atomical 12atomically 17atomicities 15atomicity 16atomics 11Add 1 Letter To Make These Words...Phrasesatomic number 107