tuff

(tŭf)

A rock composed of compacted volcanic ash varying in size from fine sand to coarse gravel.

[French tuf, from Old French, from Old Italian tufo, tufa; see tufa.]

tuff·a′ceous (tŭ-fā′shəs) adj.

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.

tuff

(tʌf)

(Geological Science) a rock formed by the fusing together on the ground of small rock fragments (less than 2 mm across) ejected from a volcano

[C16: from Old French tuf, from Italian tufo; see tufa]

tuffaceous adj

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

tuff

(tʌf)

n.

a fragmental rock consisting of the smaller kinds of volcanic detritus, as ash or cinder, usu. more or less stratified.

[1560–70; < Middle French tuf(e) < Italian tufo. See tufa]

tuff•a′ceous, adj.

tuff

(tŭf)

A rock made up of particles of volcanic ash, varying in size from fine sand to coarse gravel.

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.

tuff

A rock made up of compacted volcanic ash; also known as tufa.

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

tuff - hard volcanic rock composed of compacted volcanic ash

tufa

volcanic rock - extrusive igneous rock solidified near or on the surface of the Earth

Mentioned in

References in classic literature

These consist either of lava or scoriae, or of finely- stratified, sandstone-like tuff. Most of the latter are beautifully symmetrical; they owe their origin to eruptions of volcanic mud without any lava: it is a remarkable circumstance that every one of the twenty-eight tuff-craters which were examined, had their southern sides either much lower than the other sides, or quite broken down and removed.

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The new plan includes both options as well as a longer, 27-year life-of-mine, with perlite and pozzolan being mined in the first 15 years from the Main Zone and then just pozzolan from the Tuff Zone.

Sunrise Resources Hands CS Project Mining Plan To US Authorities

one million had been allocated for tuff tiles in Chak No 251.

Two development schemes approved

The acquisition creates a new presence in the Northeast for Tuff Shed, and extends Tuff Shed's service area to all of the contiguous United States.

Tuff Shed Acquires Home Depot Supplier Sheds USA

As a socially responsible manufacturer, Khimji Paints has been leading the governments Green initiatives and was the first paint company to introduce Low-VOC, eco-friendly paints into Oman, which led them to introduce Royal Tuff Stain Resistant emulsion and Deluxe Matt emulsion.

VIBRANT COLOURS

For the holiday season, Fluff & Tuff designs a unique, limited edition Holiday Charity Toy and donates 100 percent of the profits to animal related charities.

Fluff & Tuff Announces 2018 Holiday Charity Toy: Nicholas Bear

Glick in 1959) sold a parcel that included 201 - 203 East 76th Street (1329-1337 Third Avenue), 1339 Third Avenue, 1345 Third Avenue, 200 East 77th Street, and 202 East 77th Street to TUFF.

Northwell drops $232M for new UWS center

Late Nite Tuff Guy is very much a disco-oriented project.

Made of Tuff stuff ... emma johnson chats to disco wizard of oz, late nite tuff guy

REV Group Inc (NYSE:REVG) on Tuesday reported that launch of a new extreme-duty aerial fire apparatus, the Tuff Truck AerialCat, under its KME Fire brand.

REV Group launches KME Fire Brand's Tuff Truck AerialCat

The religious party also claims that they will give tuff contest to their rival groups in the coming general election and also decide to held different rallies in Peshawar to attract the voters.

Election season starts in Peshawar as candidates bid to attract voters

Moreover, a sum of Rs23.2 million was being spent on tuff tiles and drain schemes in Moza Garay Wahan.

Director ACE inspects development schemes in Muzaffargarh