ephemeral

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Related to Ephemeral river: Ephemeral creek

ephemeral

Biology
1. a short-lived organism, such as the mayfly
2. a plant that completes its life cycle in less than one year, usually less than six months

ephemeral

Temporary. Fleeting. Transitory. See ephemeral message app.
References in periodicals archive ?
Freckman of the University of California, Riverside, first visited this area three years ago, she expected to find scant life in the desiccated soils far from the lakes and ephemeral rivers where other researchers had discovered numerous organisms.