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in zoology, organ found in bees, many wasps, some ants, and in scorpions and sting rays, used defensively as well as to kill or paralyze prey. In the bee and the wasp the venomvenom
or zootoxin,
any of a variety of poisonous substances produced by animals. In poisonous snakes, venom is secreted in two poison glands, one on each side of the upper jaw, and enters the fang by a duct.
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 is produced by glands associated with the ovipositor (egg-laying organ) of the female. As symptoms differ, it is assumed that the venom of each species of insect probably has slightly different chemical properties. The bee's "acid gland" produces histamine and proteinlike substances that are extremely dangerous to persons with specific allergies to them. Adrenaline injections may be lifesaving in such cases. In the honeybee the sting is a minute needle with tiny serrated edges, the teeth of which point backward. This makes it hard for the insect to pull the organ loose and often results in the fatal loss of the sting, the poison gland, and part of the intestine. Hornets, yellow jackets, and other wasps have sharp, smooth stings that can be used repeatedly. A few ants produce formic acid as a venom. The scorpion kills its prey with poison injected by a curved spine at the tip of its tail; the wound is painful to human adults and may be fatal to children. Strictly speaking, spiders bite rather than sting, since they inject their venom by means of fanglike cheliceras. Coelenterates, e.g., the hydra, jellyfish, and certain corals, are equipped with stinging capsules (nematocysts) consisting of a trigger mechanism that, when stimulated, raises the hydrostatic pressure of the cell so that hollow venom-bearing threads are ejected with enough force to pierce the prey. The larger coelenterates, e.g., the Portuguese man-of-war and Cyanea, are dangerous to man. The stingrays, or stingarees, have long whiplike tails bearing one to three sharply toothed, bony, poisonous stingers capable of inflicting painful wounds.
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1. a skin wound caused by the poison injected by certain insects or plants
2. pain caused by or as if by the sting of a plant or animal
3. a sharp pointed organ, such as the ovipositor of a wasp, by which poison can be injected into the prey
4. Slang a trap set up by the police to entice a person to commit a crime and thereby produce evidence
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005


A parallel dialect of Scheme intended to serve as a high-level operating system for symbolic programming languages. First-class threads and processors and customisable scheduling policies.

E-mail: <>.

["A Customizable Substrate for Concurrent Languages", S. Jagannathan et al, ACM SIGPLAN Notices, 1992].
This article is provided by FOLDOC - Free Online Dictionary of Computing (
References in periodicals archive ?
Conclusions: Since there is a large number of cases with a history of previous scorpion stings, it appears we can reduc e the incidence of this occurrence using education of preventing and control ways from this phenomenon to persons referred to treatment in the studied area and repeat those in similar regions with high range of scorpion sting.
ISLAMABAD -- Many people dread being stung by a wasp, but the consequences could be more serious for older people than just the pain - with stings potentially triggering heart attacks in those with underlying heart conditions.
Children without definite history of scorpion sting or clinical features of scorpion sting.
Sting said he hadn't seen any of the other nominated shows.
Still the flip-flopping between the two matches that will headline Sting is widely regarded as a power struggle between Vince McMahon and Triple H.
Conclusion: Scorpion sting is an acute life-threatening emergency, and an early presentation to the hospital.
Stings, on the other hand, are delivered by the animal's stinger and can be offensive or defensive, said Dr Khawaja.
He was joined again by Sting on guitar, as Simon covered his touching ballad, "Fragile.'' At the end, Simon expressed his love for the song, and told Sting: "I wish I wrote it.''
Birmingham coroner Aidan Cotter said it was "unlikely" that the bee sting was responsible for his collapse.
Scorpion-stung patients who referred to the health centre and hospital of city of Ramhormoz during 2006-2010 filled out a questioner requesting age, gender and residence of victim, stung part of body, color of stinging scorpion, treatment with or without antivenin injection, the way how antivenin applied and death due to the sting. The frequencies of entomo-epidemiological and medical parameters were converted to the percentage rank.
According to the rock star's Twitter page, Sting has been advised by his doctor not to perform.
Sting had also canceled several dates from the tour a few days ago until yesterday, July 12, citing health reasons, his own Facebook page said.