Fornication's a term which typically refers to voluntary sexual intercourse between persons not married to each other. The origin of the word derives from Latin. The word fornix means "an archway" or "vault" and it became a common euphemism for a brothel as prostitutes could be solicited in the vaults beneath Rome. More directly, fornicatio means "done in the archway"; thus it originally referred to prostitution. The first recorded use of the noun in its modern meaning was in 1303 AD, with the v… (More on Fornication)