opal

[ oh-puhl ]

/ ˈoʊ pəl /

noun

a mineral, an amorphous form of silica, SiO2 with some water of hydration, found in many varieties and colors, including a form that is milky white.

an iridescent variety of this that is used as a gem.

a gem of this.

Origin of opal

1350–1400; Middle English <Latin opalus<Greek opállios opal, gem; probably from a source akin to Sanskrit upala precious stone

Words nearby opal

opacification, opacify, opacity, opacus, opah, opal, opalesce, opalescence, opalescent, opaleye, opal glass

Definition for opal (2 of 2)

Opal

[ oh-puhl ]

/ ˈoʊ pəl /

noun

a female given name.

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for opal

The rebels then turned their guns on the family huddled in the Opal.
‘Argo’ in the Congo: The Ghosts of the Stanleyville Hostage Crisis|Nina Strochlic|November 23, 2014|DAILY BEAST
One of the more positive parts of your personal life is your marriage to Opal Stone Perlman, which has lasted over three decades.
Ron Perlman's Secret Suicide Attempt|William O’Connor|October 28, 2014|DAILY BEAST
That clock has four faces made of opal, estimated at a value of $10-20 million.
Grand Central Terminal: 100 Years, 100 Facts|Sarah Begley|February 1, 2013|DAILY BEAST
In that case, at least, Little, Brown responded by pulling Opal from the bookshelves.
Another Memoir Meltdown|Howard Kurtz|April 18, 2011|DAILY BEAST

The air was clear, and the sky like opal, and the pale, pearly tints of the clouds were ravishing to behold.
Love's Pilgrimage|Upton Sinclair
It is for me to see the opal fires lick up the mist; such cheery little wonders of the road are all for me.
The Joys of Being a Woman|Winifred Kirkland
It was an opal of some size set unusually in silver filigree with seed pearls and brilliants.
Carnival|Compton Mackenzie
"Every gibber's got an opal heart," remarked George, smashing a large boulder to fragments.
In Search of El Dorado|Alexander MacDonald
As a child Opal had immensely admired her two godmothers, and had been proud of their many accomplishments.
A Fortunate Term|Angela Brazil

British Dictionary definitions for opal

opal

/ (ˈəʊpəl) /

noun

an amorphous, usually iridescent, mineral that can be of almost any colour, found in igneous rocks and around hot springs. It is used as a gemstone. Composition: hydrated silica. Formula: SiO 2 . n H 2 O

Derived forms of opal

opal-like, adjective

Word Origin for opal

C16: from Latin opalus, from Greek opallios, from Sanskrit upala precious stone

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for opal

opal

[ ō′pəl ]

A usually transparent mineral consisting of hydrous silica. Opal can occur in almost any color, but it is often pinkish white with a milky or pearly appearance. It typically forms within cracks in igneous rocks, in limestones, and in mineral veins. It also occurs in the silica-rich shells of certain marine organisms. Chemical formula: SiO2·nH2O.

单词	opal
释义	opal [ oh-puhl ] / ˈoʊ pəl / noun a mineral, an amorphous form of silica, SiO2 with some water of hydration, found in many varieties and colors, including a form that is milky white. an iridescent variety of this that is used as a gem. a gem of this. Origin of opal 1350–1400; Middle English <Latin opalus<Greek opállios opal, gem; probably from a source akin to Sanskrit upala precious stone Words nearby opal opacification, opacify, opacity, opacus, opah, opal, opalesce, opalescence, opalescent, opaleye, opal glass Definition for opal (2 of 2) Opal [ oh-puhl ] / ˈoʊ pəl / noun a female given name. Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for opal The rebels then turned their guns on the family huddled in the Opal. ‘Argo’ in the Congo: The Ghosts of the Stanleyville Hostage Crisis\|Nina Strochlic\|November 23, 2014\|DAILY BEAST One of the more positive parts of your personal life is your marriage to Opal Stone Perlman, which has lasted over three decades. Ron Perlman's Secret Suicide Attempt\|William O’Connor\|October 28, 2014\|DAILY BEAST That clock has four faces made of opal, estimated at a value of $10-20 million. Grand Central Terminal: 100 Years, 100 Facts\|Sarah Begley\|February 1, 2013\|DAILY BEAST In that case, at least, Little, Brown responded by pulling Opal from the bookshelves. Another Memoir Meltdown\|Howard Kurtz\|April 18, 2011\|DAILY BEAST The air was clear, and the sky like opal, and the pale, pearly tints of the clouds were ravishing to behold. Love's Pilgrimage\|Upton Sinclair It is for me to see the opal fires lick up the mist; such cheery little wonders of the road are all for me. The Joys of Being a Woman\|Winifred Kirkland It was an opal of some size set unusually in silver filigree with seed pearls and brilliants. Carnival\|Compton Mackenzie "Every gibber's got an opal heart," remarked George, smashing a large boulder to fragments. In Search of El Dorado\|Alexander MacDonald As a child Opal had immensely admired her two godmothers, and had been proud of their many accomplishments. A Fortunate Term\|Angela Brazil British Dictionary definitions for opal opal / (ˈəʊpəl) / noun an amorphous, usually iridescent, mineral that can be of almost any colour, found in igneous rocks and around hot springs. It is used as a gemstone. Composition: hydrated silica. Formula: SiO 2 . n H 2 O Derived forms of opal opal-like, adjective Word Origin for opal C16: from Latin opalus, from Greek opallios, from Sanskrit upala precious stone Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for opal opal [ ō′pəl ] A usually transparent mineral consisting of hydrous silica. Opal can occur in almost any color, but it is often pinkish white with a milky or pearly appearance. It typically forms within cracks in igneous rocks, in limestones, and in mineral veins. It also occurs in the silica-rich shells of certain marine organisms. Chemical formula: SiO2·nH2O. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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