1. A recurring sleep state during which rapid eye movements do not occur and dreaming does not occur; accounts for about 75% of normal sleep time
   - orthodox sleep, NREM sleep, nonrapid eye movement, NREM

Type of: sleep, slumber

• mensuration
• menswear
• mental
• mental ability
• mental abnormality
• mental age
• mental anguish
• mental attitude
• mental balance
• mental block
• mental capacity
• mental case
• mental condition
• mental confusion
• mental defectiveness
• mental deficiency
• mental dexterity
• mental disease
• mental disorder
• mental disturbance
• mental energy
• mental exhaustion
• mental faculty
• mental health
• mental home