Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary


noun pearl·ite \ˈpər(-ə)-ˌlīt\

Definition of pearlite

  1. :  the lamellar mixture of ferrite and cementite in slowly cooled iron-carbon alloys occurring normally as a principal constituent of both steel and cast iron


play \ˌpər-ˈli-tik\ adjective

Origin and Etymology of pearlite

French perlite, from perle pearl

First Known Use: 1888

Learn More about pearlite

Seen and Heard

What made you want to look up pearlite? Please tell us where you read or heard it (including the quote, if possible).