pre·​form | \ ˈprē-ˌfȯrm How to pronounce preform (audio) , (ˌ)prē-ˈfȯrm\
preformed; preforming; preforms

Definition of preform

 (Entry 1 of 2)

transitive verb

1 : to form or shape beforehand
2 : to bring to approximate preliminary shape and size


pre·​form | \ ˈprē-ˌfȯrm How to pronounce preform (audio) \
plural preforms

Definition of preform (Entry 2 of 2)

: any of various objects of manufacture or handicraft after preliminary shaping: such as
a : a rough gemstone that has been cut to approximately its finished size and shape
b : a tube produced for the purpose of being molded into a particular form (such as a bottle)

Examples of preform in a Sentence

Recent Examples on the Web: Verb

According to a statement from the National Aquarium obtained by the Associated Press, the DNR will preform an animal autopsy (or a necropsy) to learn more about why the animal ended up stranded on the beach. Dave Quinn,, "Young Sperm Whale Dies After Beaching on Maryland Shore, Despite Help from Rescuers and Locals," 16 Sep. 2019 Meanwhile, the low-to-mid rise market has been preforming well. Dallas News, "Tax incentives could kickstart Fort Worth's first new residential high-rise in 30 years," 21 Aug. 2019 No stereotype will ever be more authentic or accurate than the individuals that comprise the community this preformed notion purports to represent. Jason Han,, "For this surgeon-in-training, his profession's stereotype both inspiring and damaging," 15 May 2018 But the Hunter for Target line is mass-produced in a factory, using a preformed mold. Abha Bhattarai,, "Upscale, downscale: Target draws customers with collaborations with high-end brands," 16 Apr. 2018 The 21-story Hilton Palacio del Rio was built in 202 days, using a crane to lift preformed, furnished room modules into place. Scott Huddleston, San Antonio Express-News, "HemisFair ’68 transformed the city," 31 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'preform.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of preform


1601, in the meaning defined at sense 1


1931, in the meaning defined above

History and Etymology for preform


Latin praeformare, from prae- + formare to form, from forma form

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Last Updated

9 Oct 2019

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Time Traveler for preform

The first known use of preform was in 1601

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More from Merriam-Webster on preform

Rhyming Dictionary: Words that rhyme with preform Encyclopedia article about preform

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