priapism

Etymology

From Latin priapismus, from Priapus (“the god of procreation, the penis”) +‎ -ism, from Ancient Greek πριαπισμός (priapismós).

Noun

priapism (countable and uncountable, plural priapisms)

1. (pathology) A potentially painful or harmful medical condition in which the erect penis (erection) does not return to its flaccid state (despite the absence of both physical and psychological stimulation), often as a result of a spinal injury.