Premature definition

prēmə-tyo͝or, -to͝or, -cho͝or
Born after a gestation period of less than the normal time.

A premature infant.

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Occurring, growing, or existing before the customary, correct, or assigned time; uncommonly or unexpectedly early.

A premature end.

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Happening, done, arriving, or existing before the proper or usual time; too early; specif., born before the full term of gestation.
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Born after a gestation period of less than the normal time.

A premature infant.

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Occurring before a state of readiness or maturity has arrived.

A premature birth.

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Taking place earlier than anticipated, prepared for, or desired.
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(informal) Suffering from premature ejaculation.
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The definition of premature is something that occurs too early or before it is ready.

When you jump into something with an ill-prepared effort before you are ready, this is an example of a premature effort.

When a baby is born after just seven months of pregnancy instead of nine months, this is an example of a baby that is premature.

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Origin of premature

  • Middle English ripe from Latin praemātūrus ripe too early prae- pre- mātūrus ripe mā-1 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin praematurus, equivalent to pre- +"Ž mature. Attested circa 1520.

    From Wiktionary