Where does “prayerhouse” come from?

prayerhouse (English) comes from English prayer, from English pray, from Middle English preien, from Anglo-Norman preier, from Old French proiier, from Latin precor, from Latin prex, from Proto-Italic preks.

Ancestry of “prayerhouse”, step by step

prayerhouse traces back through two separate lines of ancestry.

via English prayer

StepLanguageWordMeaning
1EnglishprayerA practice of communicating with one's God; An...
2EnglishprayTo direct words, thoughts, or one's attention to...
3Middle Englishpreiento pray
4Anglo-NormanpreierAlternative form of proiier
5Old Frenchproiierto pray; to pray; to beg; to implore; to beg
6LatinprecorI beseech, beg, pray, entreat; I wish well or ill...
7Latinprexprayer; request; entreaty
8Proto-Italicpreks
9Proto-Indo-Europeanpréḱs
10Proto-Indo-Europeanpreḱ-to ask
11Proto-Indo-Europeanpr̥ḱneh₂

via English House

StepLanguageWordMeaning
1EnglishHouseA particular chamber of political representation
2Middle Englishhoushouse, residence; house of worship, temple;...
3Old Englishhūsdwelling, shelter, house; house
4Proto-West Germanichūshouse
5Proto-Germanichūsąhouse
6Proto-Indo-European(s)kewH-to cover, bedeck; cover
Every word from Proto-Indo-European pr̥ḱneh₂