ETYM Latin, from Greek oasis; cf. Copt. ouahe.
(Irregular plural: oases).
A fertile tract in a desert (where the water table approaches the surface).
Area of land made fertile by the presence of water near the surface in an otherwise arid region. The occurrence of oases affects the distribution of plants, animals, and people in the desert regions of the world.
1. Lieu fertile dans un désert.
2. (Au figuré) Refuge. Un oasis de calme.