The Collaborative International Dictionary
Microvolt \Mi`cro*volt"\ (m[imac]"kr[-o]*v[=o]lt`), n. [Micro- + volt.] (Elec.) A measure of electro-motive force; the millionth part of one volt.
Wiktionary
n. One millionth (10-6) of a volt, abbreviated as µV.
WordNet
n. a unit of potential equal to one millionth of a volt
Usage examples of "microvolt".
When the proper interval had passed, a microvolt was internally induced.
From the generator was a wire so small you could only see it with an electron microscope that was attached to a larger wire, which led to a microvolt meter.
In the alpha wave the potential varies by about 20 microvolts in a cycle of roughly 10 times a second.
It made Junior into a catalytoxic agent on account of the way the rearrangement of the desoxyribonucleic acid his genes was made of worked on the kappa waves of his nasty little brain, stepping them up as much as thirty microvolts.
In the late seventies, recordings were made of Zen masters who registered as high as a hundred microvolts, though only in surges, and only in near-cataleptic meditative trance.