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Etymology

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micro- +‎ dot

Noun

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microdot (plural microdots)

  1. A text or photographic image that has been reduced in size to that of a typographical dot in order to escape detection by unintended recipients.
  2. (informal) A small-sized tablet containing lysergic acid diethylamide (LSD).

Translations

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Verb

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microdot (third-person singular simple present microdots, present participle microdotting, simple past and past participle microdotted)

  1. (transitive) To mark with a microdot.
  2. (transitive) To make into a microdot.