1. causing or tending to cause precipitation of a substance from solution
Usage: chemistry; technical
2. acting with excessive haste or without due consideration
Usage: formal

Examples

• The precipitative agent caused the metal ions to form solid particles.
• Adding salt had a precipitative effect on the protein solution.
• His precipitative decision to quit without notice surprised everyone.
• The committee warned against precipitative action before reviewing all options.
• The precipitative nature of the chemical reaction made it useful for purification.
• Her precipitative response to criticism often made situations worse.