THEREON
Meaning of THEREON in English
there ‧ on /ðeərˈɒn $ ðerˈɒːn, -ˈɑːn/ BrE AmE adverb formal
1 . on the thing that has just been mentioned
2 . ↑ thereupon
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012