Dictionary![]() ![]() o•a•sisPronunciation: (ō-ā'sis), [key] —n., —pl. -sesPronunciation: (-sēz). [key] 1. a small fertile or green area in a desert region, usually having a spring or well. 2. something serving as a refuge, relief, or pleasant change from what is usual, annoying, difficult, etc.: The library was an oasis of calm in the hectic city. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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