Added 10 October 2026 microdot noun Categories: ThingsObscure Words noun ! Definition from WordNet 3.1, Princeton University. More about microdot at Wordnik → Where our words come from → Photograph reduced to the size of a dot (usually for purposes of security). Origin From micro- + dot. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: microtextmicrocopymicrodocumentmicroprintmicromarkmicroimagemicrographicsmicrodropmicrorecordpixelmicrodrawingnanodot Back to today's word