- The definition of a precaution is something done in advance in order to protect against a danger or hazard.
Putting boards over the windows to prevent break-ins is an example of a precaution.
precaution definition by Webster's New World
- care taken beforehand; caution used in advance
- a measure taken beforehand against possible danger, failure, etc.
Origin: French précaution ; from Late Latin praecautio ; from Classical Latin praecautus, past participle of praecavere ; from prae-, before (see pre-) plush cavere, to take care: for Indo-European base see hear
- precautionary adjective
precaution definition by American Heritage Dictionary
- An action taken in advance to protect against possible danger, failure, or injury; a safeguard: followed safety precautions when using heavy machinery.
- Caution practiced in advance; forethought or circumspection: a need for precaution when planning a vacation.
Origin: Late Latin praecautiō, praecautiōn-, from praecautus, past participle of Latin praecavēre, to guard against : prae-, pre- + cavēre, to beware.