tachograph

[ tak-uh-graf, -grahf ]

noun

1. a recording tachometer.
2. tachogram.

tachograph

/ -ˌɡræf; ˈtækəˌɡrɑːf /

noun

1. a tachometer that produces a graphical record ( tachogram ) of its readings, esp a device for recording the speed of and distance covered by a heavy goods vehicle Often shortened totacho

Word History and Origins

Origin of tachograph¹

tacho- + -graph