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Pronunciation: pre'ma-tur' -tyur


  1. Occurring before the usual or expected time.
  2. Denoting an infant born at a gestational age of less than 37 weeks; birth weight is no longer considered a criterion for use of this designation.

[L. praematurus, too early, fr. prae-, pre- + maturus, ripe (mature)]

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.