Lexic.us

Definition of Mica

1. Noun. 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.

Definition of Mica

1. n. The name of a group of minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic. They differ widely in composition, and vary in color from pale brown or yellow to green or black. The transparent forms are used in lanterns, the doors of stoves, etc., being popularly called isinglass. Formerly called also cat-silver, and glimmer.

Definition of Mica

1. Noun. 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. ¹

¹ Source: wiktionary.com

Definition of Mica

1. a mineral [n -S]

Medical Definition of Mica

1. The name of a group of minerals characterised by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic. They differ widely in composition, and vary in colour from pale brown or yellow to green or black. The transparent forms are used in lanterns, the doors of stoves, etc, being popularly called isinglass. Formerly called also cat-silver, and glimmer. The important species of the mica group are: muscovite, common or potash mica, pale brown or green, often silvery, including damourite (also called hydromica); biotite, iron-magnesia mica, dark brown, green, or black; lepidomelane, iron, mica, black; phlogopite, magnesia mica, colourless, yellow, brown; lepidolite, lithia mica, rose-red, lilac. Mica (usually muscovite, also biotite) is an essential constituent of granite, gneiss, and mica slate; biotite is common in many eruptive rocks; phlogopite in crystalline limestone and serpentine. Mica diorite, a schistose rock, consisting of mica and quartz with, usually, some feldspar. Origin: L. Mica crumb, grain, particle; cf. F. Mica. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Mica

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