Assertion: erection | /r/Synonym | nocturnal penile tumescence
Facets:
value: medically
type: MANNER
Source sentences:
text: Erections during sleep or upon waking up are known as nocturnal penile tumescence (NPT).
text: Monitoring erections that occur during sleep (nocturnal penile tumescence) can help you and your doctor to understand if the erectile dysfunction is due to psychological or physical causes.
text: Such an erection is medically known as nocturnal penile tumescence (informally: morning wood or morning glory).