Hebrew and Greek Strong's Dictionary with all the definitions plus combined with every place that word is used in the definitions.
Complete index of every word used in both the Hebrew and Greek Strong's Dictionary in English Word order.
Hebrew and Greek Expanded Dictionary
thereupon 1893 - epei {ep-i'}; from 1909 and 1487; {thereupon}, i.e. since (of time or cause): -- because, else, for that (then, -asmuch as), otherwise, seeing that, since, when.
thereupon 2026 - epoikodomeo {ep-oy-kod-om-eh'-o}; from 1909 and 3618; to build upon, i.e. (figuratively) to rear up: -- build thereon ({thereupon}, on, upon).