Also found in: Thesaurus, Medical, Acronyms, Idioms, Encyclopedia, Wikipedia.
1. A fine-grained, fibrous variety of chalcedony with colored bands or irregular clouding.
2. A playing marble made of agate or a glass imitation of it; an aggie.
3. A tool with agate parts, such as a burnisher tipped with agate.
4. Printing A type size, about 5 1/2 points.
[Middle English achate, agaten, from Old French acate, agate, alteration (influenced by Greek agathē, good) of Latin achātēs, from Greek akhātēs.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Minerals) an impure microcrystalline form of quartz consisting of a variegated, usually banded chalcedony, used as a gemstone and in making pestles and mortars, burnishers, and polishers. Formula: SiO2
2. (Individual Sports, other than specified) a playing marble of this quartz or resembling it
3. (Printing, Lithography & Bookbinding) printing Also called: ruby US and Canadian (formerly) a size of printer's type approximately equal to 5 point
[C16: via French from Latin achātēs, from Greek akhatēs]
dialect Northern English on the way
[C16: a-2 + gate3]
(Biography) James (Evershed). 1877–1947, British theatre critic; drama critic for The Sunday Times (1923–47) and author of a nine-volume diary Ego (1935–49)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
1. a variegated chalcedony showing curved, colored bands or other markings.
2. a playing marble made of this substance, or of glass in imitation of it.
a. a 5½-point type.
b. a type size smaller than that used for news text, esp. in classified advertisements.
[1150–1200; « Medieval Latin achātēs < Greek achatēs]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
A type of very fine-grained quartz found in various colors that are arranged in bands or in cloudy patterns. The bands form when water rich with silica enters empty spaces in rock, after which the silica comes out of solution and forms crystals, gradually filling the spaces from the outside inward. The different colors are the result of various impurities in the water.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Switch to new thesaurus
|Noun||1.||agate - an impure form of quartz consisting of banded chalcedony; used as a gemstone and for making mortars and pestles|
moss agate - an agate resembling moss with brown, black, or green markings
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
agate[ˈægət] N → ágata f
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
agate[ˈægət] n → agate f
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
n → Achat m
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007