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adjective | noun
Archaean [ɑ:'ki:ən] adj.
geol. архейський
 English thesaurus
Archaean [ɑ:'ki:ən] n
geol. Archean (MichaelBurov)
Archaean [ɑ:'ki:ən] abbr.
abbr., geol. Ar (MichaelBurov)