| 释义 |
jitterenUK
jit·ter J0044800 (jĭt′ər)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.3. a. An unwanted variation in an electronic or optical signal.b. An unwanted variation in the arrival times of a sequence of data packets over a digital network.
[Perhaps alteration of chitter.]jitter (ˈdʒɪtə) vb (intr) to be anxious or nervousn1. the jitters nervousness and anxiety2. (Electronics) 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]jit•ter (ˈdʒɪt ər)
n. 1. the act or the condition of a person or thing that jitters. 2. jitters, a feeling of fright or uneasiness (usu. prec. by the): to get the jitters in an empty house. 3. fluctuating movement, as in an image on a television screen. v.i. 4. to make a series of quick, shivering or jumping movements. 5. to behave nervously. [1920–25] jitter
Past participle: jittered
Gerund: jittering
| Present |
|---|
| I jitter | | you jitter | | he/she/it jitters | | we jitter | | you jitter | | they jitter |
| Preterite |
|---|
| I jittered | | you jittered | | he/she/it jittered | | we jittered | | you jittered | | they jittered |
| Present Continuous |
|---|
| I am jittering | | you are jittering | | he/she/it is jittering | | we are jittering | | you are jittering | | they are jittering |
| Present Perfect |
|---|
| I have jittered | | you have jittered | | he/she/it has jittered | | we have jittered | | you have jittered | | they have jittered |
| Past Continuous |
|---|
| I was jittering | | you were jittering | | he/she/it was jittering | | we were jittering | | you were jittering | | they were jittering |
| Past Perfect |
|---|
| I had jittered | | you had jittered | | he/she/it had jittered | | we had jittered | | you had jittered | | they had jittered |
| Future |
|---|
| I will jitter | | you will jitter | | he/she/it will jitter | | we will jitter | | you will jitter | | they will jitter |
| Future Perfect |
|---|
| I will have jittered | | you will have jittered | | he/she/it will have jittered | | we will have jittered | | you will have jittered | | they will have jittered |
| Future Continuous |
|---|
| I will be jittering | | you will be jittering | | he/she/it will be jittering | | we will be jittering | | you will be jittering | | they will be jittering |
| Present Perfect Continuous |
|---|
| I have been jittering | | you have been jittering | | he/she/it has been jittering | | we have been jittering | | you have been jittering | | they have been jittering |
| Future Perfect Continuous |
|---|
| I will have been jittering | | you will have been jittering | | he/she/it will have been jittering | | we will have been jittering | | you will have been jittering | | they will have been jittering |
| Past Perfect Continuous |
|---|
| I had been jittering | | you had been jittering | | he/she/it had been jittering | | we had been jittering | | you had been jittering | | they had been jittering |
| Conditional |
|---|
| I would jitter | | you would jitter | | he/she/it would jitter | | we would jitter | | you would jitter | | they would jitter |
| Past Conditional |
|---|
| I would have jittered | | you would have jittered | | he/she/it would have jittered | | we would have jittered | | you would have jittered | | they would have jittered |
Thesaurus| Noun | 1. |  jitter - small rapid variations in a waveform resulting from fluctuations in the voltage supply or mechanical vibrations or other sourcesinterference, noise, disturbance - electrical or acoustic activity that can disturb communication | | 2. | jitter - a small irregular movementmotion, movement - a natural event that involves a change in the position or location of something |
jitternounA state of nervous restlessness or agitation.Used in plural:fidget (often used in plural), jump (used in plural), shiver (used in plural), tremble (often used in plural).Informal: all-overs, shake (used in plural).Slang: heebie-jeebies, jim-jams, willies.TranslationsjitterenUK
case of the jittersA temporary state of nervous anxiety or anticipation. Marty: "Are you ready to deliver your speech?" Anthony: "Yeah. I've got a bad case of the jitters though!"See also: case, jitter, ofget the jittersTo experience a temporary state of nervous anxiety or anticipation. A: "Are you ready to deliver your speech?" B: "Yeah. I've got a bad case of the jitters, though!"See also: get, jitterthe jittersA temporary state of nervous anxiety or anticipation. Marty: "Are you ready to deliver your speech?" Anthony: "Yeah. I've got the jitters real bad, though!" I have a song that I hum to myself to help get rid of the jitters before big competitions.See also: jitterget/have the ˈjitters (informal) feel anxious and nervous, especially before an important event or before having to do something difficult: I always get the jitters before exams. ♢ Louise had the pre-wedding jitters so badly she nearly didn’t make it to the church.See also: get, have, jitterthe jitters (ˈdʒɪdɚz) n. the nervous shakes. I get the jitters when I have to talk in public. See also: jitterjitterenUK
jitter[′jid·ər] (communications) In facsimile, distortion in the received copy caused by momentary errors in synchronism between the scanner and recorder mechanisms; does not include slow errors in synchronism due to instability of the frequency standards used in the facsimile transmitter and recorder. (electronics) Small, rapid variations in a waveform due to mechanical vibrations, fluctuations in supply voltages, control-system instability, and other causes. jitteri. An ECCM (electronic counter-countermeasure) technique in which the radar PRF (pulse repetition frequency) is made to vary in a random manner.
ii. The instability of the signal or trace of a cathode-ray tube.
iii. Small rapid variations in a waveform caused by deliberate or accidental electrical or mechanical disturbances or to changes in the supply voltages, in the characteristic of components, etc.jitterRandom variation in the timing of a signal, especially aclock.jitterA flicker or fluctuation in a transmission signal or display image. The term is used in several ways, but it always refers to some offset of time and space from the norm. For example, in a network transmission, jitter would be a bit arriving either ahead or behind a standard clock cycle. In computer graphics, to "jitter a pixel" means to place it off side of its normal placement by some random amount in order to achieve a more natural appearance. See anti-aliasing. See also jitterati.jitterenUK
jitter (jĭt'ĕr), The random variability of the cycle-to-cycle duration of vocal fold vibration; contributes to the perception of a rough or harsh voice quality.Imaging Low amplitude irregularities in echo location on an ultrasound display, attributed to electronic noise, mechanical disturbances, and other nonspecific variables
Physiology Muscle jitter The normal electric variability—‘chaos’—measured by single-fiber EMG—in the interval between 2 action potentials of successive discharges of the same single muscle fiber in the same motor unit; jitter is characterised as instability in subcomponents of motor unit action potentials, and is due to the variation in the synaptic delay at the branch points in the distal axon and at the neuromuscular junction; like fiber density, jitter is increased in neuropathic conditions (motor neuron diseases)—e.g., myasthenia gravis—is accompanied by denervation and reinnervation, and attributed to inefficient transmission of impulses in recent neural collaterals, or due to blocking—abnormal neuromuscular transmission; it is normal or near-normal in myopathic disease
Psychology See Jittersjitter Imaging Low amplitude irregularities in echo location on an ultrasound display, attributed to electronic noise, mechanical disturbances, and other variables Neurophysiology Muscle jitter The normal electric variability–'chaos'–measured by single-fiber EMG–in the interval between 2 action potentials of successive discharges of the same single muscle fiber in the same motor unit; jitter is characterized as instability in subcomponents of motor unit action potentials, and is due to the variation in the synaptic delay at the branch points in the distal axon and at the neuromuscular junction; like fiber density, jitter is ↑ in neuropathic conditions–motor neuron diseases–eg, myasthenia gravis, is accompanied by denervation and reinnervation, and attributed to inefficient transmission of impulses in recent neural collaterals, or due to blocking–abnormal neuromuscular transmission; it is normal or near-normal in myopathic disease. See Fiber density, Single-fiber electromyography PsychologyJitters, see there. jitterenUK
Synonyms for jitternoun a state of nervous restlessness or agitationSynonyms- fidget
- jump
- shiver
- tremble
- all-overs
- shake
- heebie-jeebies
- jim-jams
- willies
Words related to jitternoun small rapid variations in a waveform resulting from fluctuations in the voltage supply or mechanical vibrations or other sourcesRelated Words- interference
- noise
- disturbance
noun a small irregular movementRelated Words |