An Etymological Dictionary of the German Language/Annotated/mittel
mittel, adjective, ‘middle, interior,’ from Middle High German mittel, Old High German mittil, adjective, ‘medius, situated in the middle’; Anglo-Saxon middel, English middle, adjective, a derivative of Old Teutonic miðja-, ‘middle,’ discussed under mitte; the originally form of this derivative was Gothic *midala-, authenticated by Old High German mëtal, adjective, ‘middle.’ —