1. Tending to evaporate rapidly. 2. Tending toward violence, explosiveness, or rapid change. [L. volatilis, fr. volo, to fly]
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volatile adj readily vaporizable at a relatively low temperature
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vol·a·tile (volґə-til) [L. volatilis, from volare to fly] tending to evaporate rapidly; readily vaporizable at low temperature.Medical dictionary. 2011.