preterm

American  

[pree-turm] / priˈtɜrm /

adjective

1. occurring earlier in pregnancy than expected; premature.

   preterm labor.

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noun

1. a baby born prematurely, especially one born before the 37th week of pregnancy and weighing less than 5½ pounds (2.5 kilograms).

preterm British  

/ ˌpriːˈtɜːm /

adjective

1. (of a baby) born prematurely

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adverb

1. prematurely

Etymology

Origin of preterm

First recorded in 1925–30; pre- + term

Example Sentences

The company said it plans to appeal the ruling, and said medical experts and regulators alike consider Similac safe and necessary, as one of few options for preterm infants on the market.

From Barron's • Apr. 16, 2026

More than 100 teams worldwide participated, developing machine learning models designed to detect patterns linked to preterm birth.

From Science Daily • Feb. 21, 2026

But evidence does show that physical and psychological strain — the kind people can suffer while detained — threatens the health of a pregnancy and can mean greater risk of preterm birth.

From Salon • Oct. 22, 2025

The data showed no increases in miscarriages, stillbirths, preterm births, major birth defects, neonatal ICU admissions, infant deaths, abnormal uterine bleeding or other pregnancy-related conditions.

From Los Angeles Times • Jun. 26, 2025

She also says that there's some evidence around "preterm birth and infection during pregnancy and also some birth complications".

From BBC • May 2, 2025