[verb pree-fawrm; noun pree-fawrm]

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.


any of various uncompleted objects of manufacture after preliminary shaping.

Origin of preform

From the Latin word praefōrmāre, dating back to 1595–1605. See pre-, form
Related formsnon·pre·formed, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for preformed

Contemporary Examples of preformed

Historical Examples of preformed

  • Hence it is extremely difficult to distinguish what is preformed, and what is artefact.

  • Such action is mechanical (or becomes so), no matter what the scope of the preformed end, be it the Will of God or Kultur.

    Creative Intelligence

    John Dewey, Addison W. Moore, Harold Chapman Brown, George H. Mead, Boyd H. Bode, Henry Waldgrave, Stuart James, Hayden Tufts, Horace M. Kallen

  • In her lay a Godframed Godgiven preformed possibility which thou hast fructified with thy modicum of man's work.


    James Joyce

  • I admit that that might be so, if God had so preformed matter as to cause such an effect by the laws of motion alone.


    G. W. Leibniz

  • Adhering closely to a preformed plan, he carefully and narrowly circumscribed the scope and order of instruction.

    Clever Hans

    Oskar Pfungst

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