Search Result for "microdot": 
Wordnet 3.0

NOUN (1)

1. photograph reduced to the size of a dot (usually for purposes of security); 



WordNet (r) 3.0 (2006):

microdot
    n 1: photograph reduced to the size of a dot (usually for
         purposes of security)


Moby Thesaurus II by Grady Ward, 1.0:

23 Moby Thesaurus words for "microdot":
   bulletin board, card, catalog card, disc, file, filing card, film,
   index card, library catalog, magnetic tape, microcard, microfiche,
   microfilm, motion-picture film, phonograph record, platter,
   scoreboard, scorecard, scoresheet, slip, tape, ticker tape,
   videotape