mica

noun

mi·​ca ˈmī-kə 

: any of various colored or transparent mineral silicates crystallizing in monoclinic forms that readily separate into very thin leaves

micaceous

mī-ˈkā-shəs 

adjective

Examples of mica in a Sentence

Recent Examples on the Web

Flecks of mica and pyrite and who knows what, but only fools and greenhorns mistake it for gold. — John Archibald, Southern Living, 11 June 2026

But others, like powder or mica, are not critical. — Charlie Campbell, Time, 20 Apr. 2026

The mica window should be facing toward the substance. — Bestreviews, Mercury News, 18 Mar. 2026

If glowy skin is your goal, light-reflecting silica and mica blur texture while hyaluronic acid keeps things hydrated. — Christa Joanna Lee, Allure, 10 Apr. 2026

Word History

Etymology

New Latin, from Latin, grain, crumb; perhaps akin to Greek mikros small

First Known Use

1777, in the meaning defined above

Rhymes for mica

• micah
• pica
• spica
• formica

Kids Definition

mica

noun

mi·​ca ˈmī-kə 

: any of various minerals that contain silicon and can be separated easily into thin often transparent sheets

Medical Definition

mica

noun

mi·​ca ˈmī-kə 

: any of various colored or transparent mineral silicates crystallizing in monoclinic forms that readily separate into very thin leaves

micaceous

mī-ˈkā-shəs 

adjective