Pronunciation: (vâr"ē-om'i-tur),[key] —n. 1. Elect.an instrument for measuring inductance, consisting essentially of an inductor with two or more coils whose relative position may be changed to vary the inductance.
2. an instrument for indicating a change in a component of a magnetic field vector, esp. one related to the earth's magnetic field.
3. Aeron.an instrument that indicates the rate of climb or descent.