continuously variable transmission
noun Automotive, Machinery.
a transmission, typically using rubber belts and pulleys, in which the ratio of the rotational speeds of two shafts, as the drive shaft and driven shaft of a vehicle, can be varied continuously within a given range, providing an infinite number of possible ratios. Abbreviation: CVT
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019