orog - para
- orogenesis
- orogenic cycle
- orogeny
- orographic anticyclone
- orographic cloud
- orographic condition
- orographic depression
- orographic effect
- orographic forcing
- orographic leeside trough
- orographic lifting
- orographic low
- orographic occluded front
- orographic occlusion
- orographic precipitation
- orographic rain
- orographic rainfall
- orographic snowline
- orographic stationary front
- orographic storm
- orographic thunderstorm
- orographic uplift
- orographic vortex
- orographic wave
- orographic wave drag
- orography
- orsure
- orthogonal
- orthogonal antennas
- orthogonal curvilinear coordinates
- orthogonal functions
- orthogonal polynomials
- orthogonality
- orthographic projection
- orthomorphic map
- orthonormality
- oscillating body
- oscillation
- oscillation equation
- oscillation period
