A micro-constituent of steel and cast iron

• A lamellar mixture of cementite and ferrite formed during the cooling of austenite

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Pearlite \Pearl"ite\, Pearlstone \Pearl"stone`\, n. (Min.) A glassy volcanic rock of a grayish color and pearly luster, often having a spherulitic concretionary structure due to the curved cracks produced by contraction in cooling. See Illust. under Perlitic ...

WordNet Word definitions in WordNet
n. a lamellar mixture of cementite and ferrite formed during the cooling of austenite; a micro-constituent of steel and cast iron

Wiktionary Word definitions in Wiktionary
n. 1 A two-phased lamellar structure composed of alternating layers of alpha ferrite and cementite that occurs in some steels and cast irons, having a pearlescent appearance. 2 (context mineral English) (alternative form of perlite English)

Wikipedia Word definitions in Wikipedia
Pearlite is a two-phased , lamellar (or layered) structure composed of alternating layers of ferrite (88 wt%) and cementite (12 wt%) that occurs in some steels and cast irons . In fact, the lamellar appearance is misleading since the individual lamellae ...