say it: pree-KAW-shuhn
precaution is a noun meaning "a precautionary measure warding off impending danger or damage or injury etc.". It carries 3 recorded senses.
the trait of practicing caution in advance
judiciousness in avoiding harm or danger
“he exercised caution in opening the door”
“he handled the vase with care”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for precaution come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.