Definition of preform in English:

preform

Line breaks: pre|form
Pronunciation: /priːˈfɔːm
 
/

verb

[with object] (usually as adjective preformed)
  • Form (something) beforehand: a preformed pool
    More example sentences
    • Organs developed in this way are referred to as preformed organs.
    • Short and medium shoots were self-terminated and had only preformed nodes.
    • Nitrogen is more soluble than helium and any preformed bubbles will quickly absorb nitrogen.

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