What is Desert?

Desert definition and meaning on Dictionary terms:
a region so arid because of little rainfall that it supports only sparse and widely spaced vegetation or no vegetation at all: The Sahara is a vast sandy desert.
any area in which few forms of life can exist because of lack of water, permanent frost, or absence of soil.
an area of the ocean in which it is believed no marine life exists.
(formerly) any unsettled area between the Mississippi and the Rocky Mountains thought to be unsuitable for human habitation.

any place lacking in something: The town was a cultural desert.

of, relating to, or like a desert.
occurring, living, or flourishing in the desert: a desert tribe; a desert palm.

designed or suitable for wear in the desert, as cool, protective clothing: a big, wide-brimmed desert hat.