crack

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crack:

see cocainecocaine
, alkaloid drug derived from the leaves of the coca shrub. A commonly abused illegal drug, cocaine has limited medical uses, most often in surgical applications that take advantage of the fact that, in addition to its anesthetic effect, it constricts small arteries,
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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

What does it mean when you dream about cracks?

Can represent a flaw or weakness. A crack in a dream could be drawing on the meaning of an idiom, such as “papering over the cracks,” “cracking up,” or “falling through the cracks.”

The Dream Encyclopedia, Second Edition © 2009 Visible Ink Press®. All rights reserved.

crack

[krak]
(chemistry)
To break a compound into simpler molecules.
(engineering)
To open something slightly, for instance, a valve.
(science and technology)
A fissure.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

crack

A building defect consisting of complete or incomplete separation within a single element or between contiguous elements of constructions.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

crack

1. a break or fracture without complete separation of the two parts
2. a physical or mental defect; flaw
3. a broken or cracked tone of voice, as a boy's during puberty
4. Slang a processed form of cocaine hydrochloride used as a stimulant. It is highly addictive
5. Obsolete slang a burglar or burglary
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

crack

To break into. See cracker.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
The difference between wholesale petroleum products and crude oil prices, known as the crack spread, is an important determinant of refining margins.
There is an economic reason why the crack spread has not exceeded
And entering 2011, crack spreads are inspiring flashes of deja vu.
The crack spread, or profit for processing three barrels of oil into two of gasoline and one of heating oil, rose to a four-month high last week as fuel demand climbed.
Lower diesel shipments from China for July offered some support to the Singapore gas oil crack spread to $6.50 a barrel, up from $6 lows earlier in the week.
Figure 1 shows the average month crack spread in the U.S.
"Throughout the quarter refining fundamentals improved, gasoline and distillate inventories rebalanced, and the April blended crack spread of $18.80 is more than double the first-quarter average.
Refining margins, as typified by generic markers such as the 3-2-1 crack spread, have also showed renewed strength after weakening in the first week of May.
In Asia, steady demand from India and Pakistan soaked up gasoil cargoes, which lent support to mid-distillate crack spreads. Petroleum Argus of May 10 said ultra-low sulphur gasoil cargoes from Asia-Pacific could potentially move to North-West Europe (NWE), where the diesel crack spread to Dated had firmed to a 2010 high of $14.45/b.
Current refinery margins--what is called the "crack spread"--the difference in prices between the cost of a barrel of crude oil and money paid for the products made from the barrel--are high, running in the $20/barrel range.
The relative strength of gasoline to crude oil in February pushed the crack spread - the profit margin in buying crude oil and selling gasoline - to nearly $10/b, the highest level since August 2007.
In refining terminology, the difference between what is paid for the crude and what the products sell for is called the "crack spread." According to Muse, Stancil & Co.