name, noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   Any of a group of hydrous aluminosilicate minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic. countable, uncountable

   "His little eyes glittered like mica discs with curiosity, though he tried to keep up a bit of superciliousness."

2. 2
   any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity wordnet

Proper Noun

1. 1
   A unisex given name from Hebrew, variant of Micah.

Synonyms

All synonyms

alabasterasphaltisinglassmineraltransparencytransparent things

Example

More examples

"Mica is sometimes used as the dielectric in high-precision capacitors."

Etymology

Etymology 1

Borrowed from Latin mīca (“grain, crumb”).

Etymology 2

From Hebrew מִיכָה (mīḵāh).

Related phrases

mica-schist

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.