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1. Producing offspring or fruit in great abundance; fertile: a prolific variety of grape.
2. Producing or characterized by abundant works or results: a prolific artist; a prolific period in a writer's life. See Synonyms at fertile.

[French prolifique, from Medieval Latin prōlificus : Latin prōlēs, prōl-, offspring; see al- in Indo-European roots + Latin -ficus, -fic.]

pro·lif′i·ca·cy (-ĭ-kə-sē), pro·lif′ic·ness (-ĭk-nĭs) n.
pro·lif′i·cal·ly adv.
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The quality or state of being fertile:
References in periodicals archive ?
The experiment in literary prolificness is likely the first of its kind, and will put his creative capability and willpower to stay away from Netflix to the test.
It was Doucet's 20th of the season - his instinct and prolificness are both the kind of thing Coventry are missing.
One might query whether, chronologically, Whitford should appear next, since he spans the pre- to post-dissolution period, but Whitford is someone who tends, by the force of his still-evident personality and his relative prolificness, always to get the last word.