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the period a drug addict goes through following abrupt termination in the use of narcotics, usually characterized by physical and mental symptoms (withdrawal symptoms)
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



troop actions undertaken in order to lead units away from enemy strikes and to occupy favorable lines for defense, to conduct a counterattack, to shorten the front, or to gain time.

A withdrawal may be accompanied by a disengagement or be carried out deliberately without contact with the enemy. A withdrawal accompanied by a disengagement is carried out under the cover of specially assigned subunits, which, by actively engaging the enemy, ensure the secrecy and successful execution of the withdrawal. A withdrawal of the main forces is covered by rear guards and rear and flank march security detachments, as well as by laying ambushes, setting up obstacles, and carrying out demolition work. A withdrawal may be executed only by order of a senior commander.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Although learning and memory have been studied in a variety of behaviors in Aplysia (Carew 1987), by far the greatest effort has addressed learning mechanisms in defensive withdrawal reflexes, in which the modulatory transmitter serotonin (5-hydroxytryptamine or 5-HT) is an important mediator of several forms of learning (Mackey et al.
Jaw tone and pedal withdrawal reflexes were totally eliminated 3 [+ or -] 1 minutes after the administration of ketamine and continued to be absent for the 60-minute duration of anesthesia with isoflurane.
The inhibitory effects of fentanyl and other morphine like analgesics on the warm water induced tail withdrawal reflex in rats.
The contribution of facilitation of monosynaptic PSPs to dishabituation and sensitization of the Aplysia siphon withdrawal reflex. J.
Classical conditioning in a simple withdrawal reflex in Aplysia californica.
Effects of interstimulus interval and contingency on classical conditioning of the Aplysia siphon withdrawal reflex. J.
Noxious stimuli, such as strong electrical shocks applied to the animal's skin, produce sensitization/dishabituation of the defensive withdrawal reflex of Aplysia.
Long-term habituation of a defensive withdrawal reflex in Aplysia.
Functional uncoupling of inhibitory interneurons plays an important role in short-term sensitization of Aplysia gill and siphon withdrawal reflex. J.
Activity dependent recurrent inhibition: a mechanism for dynamic gain control in the siphon withdrawal reflex of Aplysia.
Cutaneous activation of the inhibitory L30 interneurons provides a mechanism for regulating adaptive gain control in the siphon withdrawal reflex of Aplysia.
Dynamic regulation of the siphon withdrawal reflex of Aplysia in response to changing environmental conditions.