How to Use preform in a Sentence

preform

noun

• This permits us scientists to reliably pull fiber from the preform rod that already has the core and clad built into it.
  — John Ballato, The Conversation, 24 Mar. 2026
• This preform is then heated and stretched, much like molten plastic, to produce thin fibers that retain the same intricate internal structure.
  — Neetika Walter, Interesting Engineering, 3 Nov. 2025
• Think of pulling on a wad of gum in your mouth – that thin strand is like the fiber, except scientists slowly lower the big preform into the furnace and pull out the small fiber quickly.
  — John Ballato, The Conversation, 24 Mar. 2026
• In contrast, the Southampton team starts with a larger glass preform about 20 centimeters wide, with the hollow channels already built in.
  — Neetika Walter, Interesting Engineering, 3 Sep. 2025
• Analysts point out that manufacturing optical fiber preforms requires extremely advanced production technology, and adding new capacity typically takes between one and a half to two years.
  — CNBC, 19 May 2026