Jitter is the deviation from true periodicity of a presumed periodic signal in electronics and telecommunications, often in relation to a reference clock source.
jit·ter·y. adj. jit·ter·i·er, jit·ter·i·est. 1. Having or feeling nervous unease: a jittery vigil in the dark. 2. adj nervous. 1  jumpy star. 2  excitable star. 3  restless star. 4  fidgety star. 5  shaky star. 6  apprehensive star. 7  edgy star. 8  anxious star. 9  uneasy star. 10  uptight star. 11  tense star. 12  skittish star. 13  panicky star. 14  antsy star. 15  high-strung star. 16  on edge star. 17  quivering star. 18  spooked star. 19  on pins and needles star. 20  trembling star. adj. restlessly moving. 1  antsy. 2  apprehensive. 3  high-strung. 4  hyper. 5  impatient. 6  jerky. 7  jittery. 8  jumpy. 9  nervous. 10  nervous wreck. 11  nervy. 12  on edge. 13  on pins and needles. 14  restive. 15  restless. 16  spooked. 17  spooky. 18  twitchy. 19  uneasy. 20  unrestful. 21  up the wall. 22  wired. Jitter is the deviation from true periodicity of a presumed periodic signal in electronics and telecommunications, often in relation to a reference clock source. Jitter may be observed in characteristics such as the frequency of successive pulses, the signal amplitude, or phase of periodic signals. Jitter is a significant, and usually undesired, factor in the design of almost all communications links (e.g., USB, PCI-e, SATA, OC-48). Absolute jitter is the absolute difference in the position of a clock's edge from where it would ideally be. Period jitter (aka cycle jitter) is the difference between any one clock period and the ideal/average clock period. jit·ter. intr.v. jit·tered, jit·ter·ing, jit·ters. 1. To be nervous or uneasy; fidget. 2. To make small quick jumpy movements: The pictures on the wall jitter whenever a truck drives by. n. 1. A jittering movement; a tic. 2. jitters A fit of nervousness. Often used with the. plural noun nerves, anxiety, butterflies (in your stomach) (informal), nervousness, the shakes (informal), fidgets, cold feet (informal), the willies (informal), tenseness, heebie-jeebies (slang) I had a case of the jitters during my first two speeches. jittery. adj. 1. nervous and anxious. (ˈdʒɪt ə ri). adj. -ter•i•er, -ter•i•est. adj. jit·ter·i·er, jit·ter·i·est. 1. Having or feeling nervous unease: a jittery vigil in the dark. 2. Jitter period is the interval between two times of maximum effect (or minimum effect) of a signal characteristic that varies regularly with time. Jitter frequency, the more commonly quoted figure, is its inverse. Absolute jitter is the absolute difference in the position of a clock's edge from where it would ideally be. Period jitter (aka cycle jitter) is the difference between any one clock period and the ideal/average clock period. adjective nervous, anxious, jumpy, twitchy (informal), wired (slang), trembling, shaky, neurotic, agitated, quivering, hyper (informal), fidgety, antsy (informal) Investors have become jittery about the country's economy. adj. jit·ter·i·er, jit·ter·i·est. 1. Having or feeling nervous unease: a jittery vigil in the dark. 2. 1 Having or feeling nervous unease: a jittery vigil in the dark. 2  Marked by jittering movements: a jittery ride over rough terrain.  jitter Informal vb 1 intr to be anxious or nervous n 2 ♦ the jitters nervousness and anxiety 3 (Electronics) small rapid variations in the amplitude or timing of a waveform arising from fluctuations in the voltage supply, mechanical vibrations, etc. (C20: of unknown origin) ♦ jittery adj ♦ jitteriness n. English Collins Dictionary-English Definition & Thesaurus &nbsp. jittery agitated, anxious, fidgety, hyper (informal) jumpy, nervous, neurotic, quivering, shaky, trembling, twitchy (informal) wired (slang) Antonyms calm, composed, laid-back (informal) relaxed, together (slang) unfazed (informal) unflustered. jittery.
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