Meaning

adjective of no importance or relevance especially to a law case

adjective without material form or substance

adjective not consisting of matter

originThe adjective is derived from Late Middle English immaterial, inmateriall (“incorporeal; spiritual”), from Middle French immateriel (“not material”) (modern French immatériel), and from its etymon Medieval Latin immāteriālis (“not material”), from Latin im- (a variant of in- (prefix meaning ‘not’)) + māteriālis (“made of matter, material”) (from māteria (“matter, substance, material”) (from…

Etymology from Wiktionary, CC BY-SA 3.0