Meaning

noun small rapid variations in a waveform resulting from fluctuations in the voltage supply or mechanical vibrations or other sources

noun a small irregular movement

originEtymology tree English jit Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English jitter From jit + -er.

Etymology from Wiktionary, CC BY-SA 3.0