/ Dictionary / Index P pearlite: Meaning and Definition of Find definitions for: pearl•ite Pronunciation: (pûr'līt), [key] — n. a microscopic lamellar structure found in iron or steel, composed of alternating layers of ferrite and cementite. perlite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pearlite (Thesaurus) pearl hominy pearlized Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language