free - fura
- free aerostat
- free air
- free air foehn
- free atmosphere
- free balloon
- free board
- free convection
- free electron
- free expansion
- free fall acceleration
- free floating moored buoy
- free foehn
- free lift
- free lifting force
- free low-frequency variability
- free mode
- free oscillation
- free period
- free radical
- free Rossby wave
- free space
- free spectral range
- free streamline
- free surface
- free turbulence
- free water
- free wave
- free wind
- free-slip boundary condition
- free-stream Mach number
- free-surface condition
- free-water content
- freeze
- freeze spray
- freeze-free period
- freeze-up
- freezing
- freezing degree-day
- freezing drizzle
- freezing fog
