crack

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crack

(krăk),
1. A fissure.
2.

crack

(krak) an incomplete split, break, or fissure.

crack

Etymology: ME, craken
a street drug made by chemically converting cocaine hydrochloride to a form that can be smoked. Smoking crack is a faster, more direct way of getting cocaine molecules into the brain. Because larger amounts of the drug reach the brain more quickly, the effects are more intense than when cocaine, in the white-powder form, is injected, ingested, or inhaled. Also called crack cocaine, freebase.

crack

Substance abuse A 'free-base' form of cocaine which, when smoked in a pipe, produce a brief, very intense 'high'. See Bingeing, Cocaine, Crack 'smile. ', Free base cocaine.

crack

(krak)
1. A fissure.

crack

A highly purified form of COCAINE which produces an intense reaction of rapid onset. Crack is inherently more dangerous than less concentrated forms and deaths have resulted from its use.

crack

(krak)
A fissure.

crack

a discontinuity in a hard, brittle surface such as horn, hoof.

toe crack

Patient discussion about crack

Q. what causes the sound of cracking noises in the head all the time it was said i had acute sinusitis but honestly i think it is more . I don't know why i have cracking noises in my head . I am very concerned about this also my neck is always stiff feeling and aching all the time. . My eyes are very tired and i see blue spots and they hurt behind the eye very badly . I have headaches very often

A. wow...that really sounds serious...i have chronic sinusitis and i can tell you i had horrible headaches but nothing like you describe now. i would strongly consider going to a hospital and checking it out...
tell us what was the result!

Q. anyone knows how to stop hard skin on the feet from becoming cracked??? during summer my feet got lots of hard skin and in the heel area the skin actually got cracked kinda deep. it hurts now and the cracks are starting to get infected I guess... do u guys know how to solve this?? I know there are some creams for that but I thought maybe now it's too late for that and I need something stronger?

A. There are good creams for moisterizing the skin of your feet on a daily basis, however now that you feel they might be infected you should see a dermatologist for some better treatment.

Q. Im only 17 I have horrble lower back pains. Im constitly rubbing,stretching, or cracking my back. the pain is either a throbbing pain or an ache or sting.I feel it worse when I put my chest out my shoulders back. my back feels like its out of place.

A. Lower back pain is so very common... I have had it for years, and just recently what I found to be very helpful is walking. Even a 30-45 minute walk and then some streching is good. I have hardly had any pain since I started exercising and it feels really good. Swimming is also known to help.

More discussions about crack
References in periodicals archive ?
The researchers found that longitudinal and transverse cracking were more sensitive to slab thickness and base type than other construction variables.
The developed FEM takes into consideration the effect of the cracking as a discrete crack model.
In older properties with cavity walls iron wall ties tying the two leaves of masonry together corrode and expand resulting in horizontal cracking in the external walls.
In his view, there are too many factors involved in the engineering and chemical formulation side of concrete cracking to leave anything to chance.
However, they all need to be improved further and customized to every particular type of cracking observed on the object analyzed [5].
2) It is found that high AE activities are observed twice during the corrosion process, which correspond to the onset of corrosion in rebar and the nucleation of cracking in concrete due to expansion of corrosion products.
The loss of structural foundation support caused cracking of drywall in the building's interior, another form of deterioration.
Compounds F4 and F6 gave the best resistance to flex cracking.
Chertkov VY (2002) Modelling cracking stages of saturated soils as they dry and shrink.
Stress corrosion cracking is the formation of cracks caused by the combination of a corrosive environment inside the mold and the presence of tensile (stretching/flexing) forces.
Instead of cracking down on raves, law enforcement should recognize that rave-based Ecstasy use will be relatively safe, especially if they tolerate the presence of testing organizations that can help ensure that users don't move on to other drugs (see sidebar).