whereinto
Whereinto is an archaic English adverb and, less commonly, a conjunction meaning into which or into what destination. It introduces a clause that denotes the direction or end point of an action. In modern English the equivalent constructions are into which or to which; whereinto survives mainly in historical, religious, or poetic contexts as a stylistic archaism.
Etymology and history: The form is a fusion of where with into, dating from Middle English and
Usage and notes: Whereinto is primarily encountered in older texts and in modern scholarly editions that aim
Examples: Whereinto shall we proceed with this investigation? (Into which direction shall we proceed with this