Ergometer is a term that refers to machines or devices used to measure physical work, such as stationary bicycles and rowing machines. There are several synonyms for the word ergometer, including dynamometer, power meter, and exercise bike. A dynamometer is a device that measures force or torque, commonly used to measure the power of an engine or motor. A power meter is a device that measures the output of a person's physical effort, typically used in cycling to track power output. The term exercise bike is self-explanatory and refers to a stationary bicycle specifically designed for exercise purposes. All of these terms are interchangeable synonyms for ergometer and are commonly used in the fitness and sports industries.