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[v. pree-fawrm; n. pree-fawrm] /v. ˈpriˈfɔrm; n. ˈpriˌfɔrm/
verb (used with object)
to form beforehand.
to determine or decide beforehand:
to preform an opinion.
to shape or fashion beforehand:
to preform a mold.
biscuit (def 5).
any of various uncompleted objects of manufacture after preliminary shaping.
1595-1605; < Latin praefōrmāre. See pre-, form
Related forms
nonpreformed, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for preformed
  • Meaning the real question is what happens to the piglets after the process is preformed.
  • As the body thawed they removed some hair and preformed a heat test, it melted.
  • As usual, the private sector preformed better than the broader economy, due to government layoffs.
  • To increase their yield, the chemists took a batch of preformed buckyballs and baked them in helium at high pressure.
  • It could well be that he preformed a groove into the foam so as to obtain an accurate guideline.
  • The preformed membrane sheets shall be placed over the joint so that the overlaps are formed in the direction of water drainage.
  • The membrane waterproofing shall be a preformed sheet.
Word Origin and History for preformed

c.1600, from Latin praeformare or else from pre- + formed (see form (v.)). Of plastic and synthetic products, from 1918.

Online Etymology Dictionary, © 2010 Douglas Harper
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