Scope.
The prefix of "seen" is "see."
The prefix pre- means before. You can easily see that in the word prefix.
Yes, spec is a prefix. See the related question for a list of words beginning with this prefix.
See
The prefix in "foresee" is "fore," which means "before." This prefix indicates that "foresee" means to see or know beforehand.
to see
see or feel
See the related link for a list with OVER 1,500 words starting with the prefix IN.
That would be spec, from the word spectate which means to watch or observe.
The prefix in means the opposite such as visible means you can see something whereas invisible means you cant
The use of auto- is as a prefix meaning "self" (as in "by itself"). (You can see a list at the related question.)
to see