/ˈzɪərɪk,ˈzɛ-/
Adjective
1. (of an environment or habitat) containing little moisture; very dry. (Google Dictionary)
2. Said of an organism adapted to live in a very dry habitat. (wiktionary.org)
3. Characterized by, relating to, or requiring only a small amount of moisture. (merriam-webster.com)
Word origin: From xero- (before vowels, xer-, word-forming element meaning “dry,” from Greek xero-, comb. form of xeros “dry”)