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variometer

var·i·om·e·ter

variometer

pronunciation:
veI ri a m tr [or] vae ri a m tr
features:
Word Parts
part of speech: noun
definition 1: any of various devices that measure or record variations in some quantity, such as a geophysical instrument that measures variations in the earth's magnetic force.
definition 2: in electronics, a variable inductor consisting of two coils, the positions of which may alter the electromagnetic inductance.