hyperarid
adjective
hy·per·ar·id
ˌhī-pər-ˈa-rəd 
-ˈer-əd
variants
or hyper-arid
: 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
Jean Hennelly KeithCite this Entry
“Hyperarid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperarid. Accessed 6 Jul. 2026.
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