Upvote:0
Fornication has the usual meaning given to it in the English language:
the action of having sex with someone who you are not married to
It isn't a specifically Christian term.
Upvote:2
I quote the Oxford Concise Dictionary; "Voluntary sexual intercourse between man and unmarried woman" (with the note that the word is occasionally resticted to cases in which the man is also unmarried). The origin of the English word is the latin word FORNIX, meaning "a brothel", presumably because women outside brothels were traditionally less willing to take part. However, the word in general usage is not limited to brothels. In other words, it is used for sexual activity detached from the marriage relationship if the word "adultery" does not apply.