— tachometrically /tak'euh me"trik lee/ , adv. — tachometry , n.
/ta kom"i teuhr, teuh-/ , n.
1. any of various instruments for measuring or indicating velocity or speed, as of a machine, a river, or the blood.
2. an instrument measuring revolutions per minute, as of an engine.
[ 1800-10; TACHO- + -METER ]