Nociceptins are neuropeptides that play a role in pain perception.

The nocifensive behavior of the animal was a result of feeling threatened.

Nocturnal penile tumescence is a normal physiological phenomenon in men.

The patient was diagnosed with a nocardial infection.

The nocebo effect can cause negative symptoms even when the treatment is harmless.

Nociception is the process by which the body detects and responds to harmful stimuli.

Nocardiasis is a rare bacterial infection.

The patient was diagnosed with a nocardiotic infection.

He experienced nocturnal pollutions frequently.

He was embarrassed by his nocturnal pollution.