The Cost of Preparing for the Boston Marathon. Running is free â and surprisingly cost-efficient in the long term. But if you need a little help, there are marathon training resources available for a price. According to a 2015 article by RunnersWorld.com, a running coach can cost $50 to $200 per month.
inhibitor. 1  a person or thing that inhibits. 2  Chemistry. a substance that decreases the rate of or stops completely a chemical reaction. 3  any impurity in a mineral that prevents luminescence. Compare activator (def 3). 4  Rocketry. an inert antioxidant used with solid propellants to inhibit burning on certain surfaces.
Chemical or substance added or applied to another substance, to slowdown a reaction or to prevent an unwanted chemical change. For example, anti-oxidants are added as inhibitors to food to retard its spoilage from exposure to air (oxygen). Similarly, protective coatings inhibit the corrosion of metals by preventing their contact with the air and/or water. An inhibitor is an opposite of a catalyst.