an isolated area of vegetation in a desert

An oasis is an isolated area of vegetation in a desert.

a fertile spot in a desert where water can be found

Oasis: A fertile spot in a desert where water is found; symbolizes boating ability to refresh and nourish our daily lives.

a cultivated area () in a desert or semi-desert environment often a date palm grove

In geography, an oasis (; plural oases ) is a cultivated area (often a date palm grove) in a desert or semi-desert environment.

an unexpected water source located in the desert

An oasis is an unexpected water source located in the desert.

a place in a desert that has water supplied by a spring or other underground water source

An oasis is a place in a desert that has water supplied by a spring or other underground water source.

an area made fertile by a source of freshwater in an otherwise dry and arid region

An oasis is an area made fertile by a source of freshwater in an otherwise dry and arid region.