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 ?
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.
Constriction ring formed by uterine walls is divided posteriorly by taking an incision.