dither

Meanings

Verb

• To tremble, shake, or shiver with cold.
• To be uncertain or unable to make a decision about doing something.
• To do something nervously.
• To render an approximation of (an image or graphic) by using dot patterns to simulate the appearance of colors or shades not in the system palette.
• To intentionally add noise to a signal to randomize errors.

Noun

• The state of being undecided.
• A form of noise which is intentionally applied to randomize errors which occur in the processing of both digital audio and digital video data.
• The use of dot patterns to approximate colors not available in the palette.

Origin

• Variant of didder, from Middle English didderen, ultimately from Proto-Germanic *titrōną, whence also derived Old High German zittarōn (German zittern) and Old Norse titra (Faroese titra, Icelandic titra).