WHEREON Meaning of WHEREON in English [where.on] conj (13c) 1 archaic: on what "tell me ~ the likelihood depends --Shak." 2: on which "the base ~ it rests" [2]whereon adv (15c) archaic: on what "~ do you look --Shak." Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012