chron·o·scope 
(krŏnə-skōp′, krōnə-)
(krŏnə-skōp′, krōnə-)n.
An optical instrument for the precise measurement of very small time intervals.
chron′o·scopic (-skŏpĭk) adj.
- immanent
- immanentism
- immanentist
- immanently
- Immanuel
- immaterial
- immaterialism
- immaterialist
- immateriality
- immaterialize
- immaterially
- immature
- immaturely
- immatureness
- immaturity
- immeasurability
- immeasurable
- immeasurableness
- immeasurably
- immediacy
- immediate
- immediate constituent
- immediately
- immediateness
- immedicable