microdot(redirected from microdots)
Also found in: Thesaurus, Medical, Encyclopedia.
A copy or photograph that has been reduced to an extremely small size for ease of transport and purposes of security.
1. (Photography) a microcopy about the size of a pinhead, used esp in espionage
2. (Recreational Drugs) a tiny tablet containing LSD
a photograph reduced to the size of a printed period, used esp. to transmit messages, photographs, drawings, etc.