Made a short, high-pitched sound; or appeared briefly on a radar screen as a small mark or signal.
Past tense of 'blip,' which is likely onomatopoetic—it imitates the sound itself. 'Blip' became common in English during the 20th century with the rise of radar technology, and the term was widely used in World War II.
A 'blip' perfectly mimics the actual electronic beeping sound—it's onomatopoeia that became technical jargon. The word is so good that 'blip' became synonymous with any small, temporary anomaly, whether it involves sound or not!
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