O

Word -> "Mot"	Symbol	Unity	Definition
Ocean swell -> "Houle océanique"			Waves generated by the transformation of "Wind waves". Longer than "Wind sea" in wavelength: period above ten second. Swell moves across the open ocean in trains of waves of similar period that radiate from a wind source.
Offshore wind -> "Vent de terre"			Wind that blows from the land toward the sea.
One-dimensional spectrum -> "Spectre unidimensionnel"			Represents the energy associated with each frequency component present in the wave profile.
Onshore wind -> "Vent de mer"			Wind that blows from the sea toward the land.
Orbital velocity -> "Vitesse orbitale"