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 UniCircle Flow, a group of 12 that preform intricate choreography while riding unicycles, suffered a fall during their act. Cydney Henderson, USA TODAY, 25 Aug. 2021 Stand up, take a break from your desk, and preform this movement. Sara Coughlin, SELF, 11 Aug. 2021 The firms have articulated a roadmap to building vehicles that allow entrepreneurs with no space experience to launch technology into orbit to preform remote sensing, communication, or other tasks. Tim Fernholz, Quartz, 8 Mar. 2021 For example, feelings related to fear, such as horror or terror, are cognitively assembled conceptions of one’s situation, rather than preformed, innate mental states inherited from animals. Dean Mobbs, Scientific American, 20 Sep. 2019 But the Hunter for Target line is mass-produced in a factory, using a preformed mold. Abha Bhattarai,, 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, 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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Time Traveler for preform

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The first known use of preform was in 1601

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Cite this Entry

“Preform.” Dictionary, Merriam-Webster, Accessed 1 Dec. 2021.

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