Definition of ig:
(n) :
(epigraphy) Latin IG.
(n) :
(medicine) Symbol for immunoglobulin = immune globulin.
(n) :
(social media) Abbreviation of Instagram. [(Internet) An online photo- and video-sharing social networking service, originally designed to mimic old-fashioned instant cameras.]
(adj) :
(video games, slang) Abbreviation of in-game. [(gaming) Within the virtual world or player experience of a video game.]
(n) :
Initialism of inspector general. [A senior official responsible for inspecting conformance to the standards in a civil or military organization.]
(v) :
Alternative form of igg (“to ignore”). [(transitive, colloquial) To ignore deliberately.]