Home › Words › T › tachometrytachometrytachometry means the use of a tachometer.Among words judged in Lexicurio's Arena, tachometry ranks #16,749 of 42,762 for Qualifying.EtymologyFrom tachy- + -metry.nounThe use of a tachometerDefinitions & examples from Wiktionary (CC BY-SA 3.0).