PRECIP'ITANT, a. [L. proecipitans, proecipito, from proeceps,headlong.]1. Falling or rushing headlong; rushing down with velocity. They leave their little lives Above the clouds,precipitant to earth.2. Hasty; urged with violent haste. Should he return, that troop so blithe and bold, Precipitant in fear, would wing their flight.3. Rashly hurried or hasty; as precipitant rebellion.4. Unexpectedly brought on or hastened.
PRECIP'ITANT, n. In chimistry, a liquor, which when poured on a solution, separates what is dissolved and makes it precipitate, or fall to the bottom in a concrete state.