ring

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Related to constriction ring: retraction ring

Ring

A place on an exchange assigned for the trading of certain commodities, futures, or options. It is also called a pit or a trading pit.

ring

See pit.
References in periodicals archive ?
Absence deformities including constriction rings occur much less frequently, with an incidence of one in 2000 to 3000 live births (Goldberg and Bartoshesky, 1985).
A constriction ring is placed around the base of the penis to maintain the erection for up to 30 minutes.
Vacuum constriction devices feature a pump that draws blood into the shaft of the penis to create an erection and a constriction ring placed at the base of the penis to maintain the erection for up to 30 minutes.