precipitate (n.) Look up precipitate at Dictionary.com
1560s, probably a back formation from precipitation.
precipitate (v.) Look up precipitate at Dictionary.com
"to hurl or fling down," 1520s, a back formation from precipitation or else from Latin praecipitatus, past participle of praecipitare "to throw or dive headlong," from praeceps (genitive praecipitis) "steep, headlong, headfirst," from prae "before, forth" (see pre-) + caput "head" (from PIE root *kaput- "head"). Meaning "to cause to happen, hurry the beginning of" is recorded from 1620s. Chemical sense is from 1620s; meteorological sense first attested 1863. Related: Precipitated; precipitating.
precipitate (adj.) Look up precipitate at Dictionary.com
c. 1600, from Latin praecipitatus, past participle of praecipitare "to throw or dive headlong," from praeceps (genitive praecipitis) "steep, headlong, headfirst," from prae "before, forth" (see pre-) + caput "head" (from PIE root *kaput- "head"). Meaning "hasty" is attested from 1650s. Related: Precipitately.