Oasis/əʊˈeɪsɪs/ Definition 1 of 2Pro Tip 1/3Literal Meaning Refers specifically to a fertile spot in the desert where water is present. The caravan stopped at the oasis to replenish their water supplies. Pro Tip 2/3Geographical Feature An oasis is a natural occurrence, not a man-made place. Oases often dictate ancient travel routes across deserts. Pro Tip 3/3Biodiversity Hotspot Oases support diverse life in arid regions and can vary in size. Birds flock to the oasis, making it a bustling hub of wildlife.