ta·chom·e·ter 
(tă-kŏmĭ-tər, tə-)
(tă-kŏmĭ-tər, tə-)n.
An instrument used to measure the rotations per minute of a rotating shaft.
[Greek takhos, speed + -METER.]
tach′o·metric (tăk′ə-mĕtrĭk) adj.
ta·chome·try n.
- olfactory bulb
- olfactory lobe
- olfactory nerve
- Olga Valentinovna
- olig-
- olig-
- oligarch
- oligarchic
- oligarchical
- oligarchy
- oligo-
- Oligocene
- oligochaete
- oligochaetous
- oligoclase
- oligodendrocyte
- oligodendroglia
- oligomer
- oligomeric
- oligomerization
- oligonucleotide
- oligophagous
- oligophagy
- oligopolistic
- oligopoly