The term 'measure of prevention' can be summed up with the crossword solution 'OUNCE, ' which is a unit of measurement. An OUNCE is a unit of mass in the imperial and United States customary systems of measurement, equal to approximately 28 grams. It is commonly used to measure the amount of a substance, such as medicine or food. In terms of prevention, an OUNCE of prevention is a phrase that refers to taking preventive measures before a problem arises, rather than waiting for it to happen and then trying to fix it.