Home › Words › S › submicrogramsubmicrogramsubmicrogram means being or relating to a quantity of less than a microgram.Among words judged in Lexicurio's Arena, submicrogram ranks #16,008 of 42,747 for Qualifying.EtymologyFrom sub- + microgram.adjBeing or relating to a quantity of less than a microgramnounAn amount that is less than a microgramDefinitions & examples from Wiktionary (CC BY-SA 3.0).