Definition of Tourmaline in English :

Define Tourmaline in English

Tourmaline meaning in English

Meaning of Tourmaline in English

Pronunciation of Tourmaline in English

Tourmaline pronunciation in English

Pronounce Tourmaline in English

Tourmaline

see synonyms of tourmaline

Noun

1. tourmaline

a mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones

WordNet Lexical Database for English. Princeton University. 2010.


Tourmaline

see synonyms of tourmaline
noun
any of a group of hard glassy minerals of variable colour consisting of complex borosilicates of aluminium with quantities of lithium, sodium, calcium, potassium, iron, and magnesium in hexagonal crystalline form: used in optical and electrical equipment and in jewellery

Collins English Dictionary. Copyright © HarperCollins Publishers


Tourmaline

see synonyms of tourmaline
noun
a very hard, piezoelectric, rhombohedral mineral, (Na,Ca)(Mg,Fe,Al,Li)3Al6(BO3)3(Si6O18)(OH)4, of various colors, used as a gem and in making pressure gauges

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.


Tourmaline

see synonyms of tourmaline
n.
A complex crystalline silicate containing aluminum, boron, and other elements, used in electronic instrumentation and, especially in its green, clear, and blue varieties, as a gemstone.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.