1. A daily cycle of activity observed in many living organisms

Derived forms: circadian rhythms

Type of: biological time

Encyclopedia: Circadian rhythm

• vapidity
• vapidly
• vapidness
• vapor
• vapor bath
• vapor density
• vapor lock
• vapor pressure
• vapor trail
• vaporific
• vaporing
• vaporisable
• vaporisation
• vaporise
• vaporised
• vaporiser
• vaporish
• vaporizable
• vaporization
• vaporize
• vaporized
• vaporizer
• vaporous
• vaporousness
• vapors