tuff


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tuff

 (tŭf)
n.
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.

tuff

(tʌf)
n
(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

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.

tuff

A rock made up of compacted volcanic ash; also known as tufa.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tuff - hard volcanic rock composed of compacted volcanic ashtuff - hard volcanic rock composed of compacted volcanic ash
volcanic rock - extrusive igneous rock solidified near or on the surface of the Earth
References in classic literature ?
These consist either of lava or scoriae, or of finely- stratified, sandstone-like tuff.
Mr Tuff said: "The electrical distribution sector is an established market where the majority of business is won on reputation and service offered and we see RED's service offering playing a major role in winning new business.
Think of the Custom Logo Tuff Ball as a round business card.
But as recent events and future plans indicate, the company doing business in 2005 is definitely not your father's Tuff Torq.
While I'm sure the authoris not an advocate of this type of fragmented way of life, most of the elements of Tuff ring true and sadly plausible to many.
Though originally intended for use on chrome plating, Micro Tuff gets similar results when applied to nickel-plated tools and even unplated stainless or carbon steels.
It's products include Sunbrella fabrics for awnings, marine applications and casual furniture, Glen Tuff fabrics for middle market casual furniture and Firesist, a flame resistant awning fabric.
But in the unsaturated zone, water is scarce and slowly percolates through the tuff, says Dan Gillies, acting chief of the nuclear hydrology program at the USGS in Denver.
LINKED TO STATE GO RATING: The credit quality of the TUFF Archives revenue bonds, at 'AA', is linked to the state of Georgia's 'AAA' general obligation (GO) bond rating.
Suse, who teamed up with Julie in Motherless Daughters before forming Tuff Love in Glasgow two years ago, said it wasn't for the want of trying.
TEAMWORK: From left, Gary Guest of FW Capital, Carol Duffy and Graham Price of Tuff X, and Gareth Hall of Lloyds TSB
The comprehensive range of TUFF rubber over-moulded sealed models feature: