A state of strong desire for sleep or sleeping for unusually long periods. The medication caused somnolence, making it difficult for her to stay awake during the meeting.
A condition characterized by a feeling of drowsiness or sleepiness. After the long drive, he was overcome with somnolence and had to pull over to rest.
A state of semi-consciousness approaching sleep, from which a person can be readily aroused; pathological drowsiness. The patient was observed in prolonged somnolence, yet he responded to verbal stimuli.