WHEREON
Meaning of WHEREON in English
/hwair on", -awn", wair-/ , conj.
1. on what or which.
adv.
2. Archaic. on what?
[ 1175-1225; ME wheron. See WHERE, ON ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012