The American Heritage® Dictionary of the English Language, 4th Edition
noun-plural. Comic books and comic strips, especially of the underground press: "the countercultural . . . comix of the sixties and early seventies, with their explicit criticism of American society” ( Lloyd Rose).
"If you are looking at Neil Gaiman and Co., certain comix/gn are certainly on as high a level as anything being written today: lush prose, fascinating characters, startling stories."