seen I. \ˈsēn\adjective Etymology: Middle English seyn, from past participle of seen, sen to see 1.: perceived or verified by sight : visible < seen beauty > 2.archaic: learned in a particular field : versed < a schoolmaster well seen in music — Shakespeare > II. Etymology: Middle English sene, seyn (past participle), from Old English gesegen past part & nonstandard past of see