English English Wikipedia has an article on:IDTWikipedia Noun IDT (countable and uncountable, plural IDTs) (programming, uncountable) Initialism of intelligent design theory. (programming, countable) Initialism of interrupt descriptor table. (military, uncountable) Initialism of inactive duty training. Anagrams D.I.T., DIT, DTI, TDI, TID, dit, it'd, tidWikiwand - on Seamless Wikipedia browsing. On steroids.