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hy·per·ar·id | \ ˌhī-pər-ˈa-rəd 
, -ˈer-əd \
, -ˈer-əd \variants:
or hyper-arid
Definition of hyperarid
: extremely arid hyperarid desert regions hyperarid climates …Antarctica's hyperarid, cold-desert conditions make it this planet's closest analogue to Mars …— Jean Hennelly Keith
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Time Traveler for hyperarid
The first known use of hyperarid was in 1960
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