adv
conj
Freq #73740
Meanings
-
1
adv
on which or on what; now chiefly formal, literary, or archaic
The pedestal whereon the statue once stood is still visible.
Thesaurus
Etymology
From Middle English wheron, a transparent compound of where + on. It has been used since the Middle English period as a relative form meaning "on which" and, in questions, "on what."