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primordial
mastery UK /pɹaɪˈmɔː.di.əl/ US /pɹaɪˈmɔɹ.di.əl/adjnoun
card 1 of 10 · fill in the blank
Lemaitre proposed that the universe began as a single _____ atom of energy.
card 1 of 10 · fill in the blank
Lemaitre proposed that the universe began as a single _____ atom of energy.