ambo, as in ambidextrous, or duo (as in duplex), or bi (as in bicycle). Depends on context.
The Latin prefix for "both" is "ambi-".
The most common prefix with the meaning of 'both' is 'ambi' (from the Latin 'ambo'). For example, 'ambidextrous', 'ambiguous'.
uni (latin) mono (greek) both of them mean one
If you mean the prefix "uni-" (unicellular, etc.), then it comes from the Latin word unus, meaning "one". (The nearly-equivalent prefix "mono-", however, comes from Greek.)
The previous answer here was "greek". Unfortunately, this is incorrect; perhaps it was a guess? The correct answer is Latin; reference: http://en.wikipedia.org/wiki/Greek_and_Latin_roots_in_English .
A prefix meaning both and around.
Germano-, Teuto-
"Together" and "with" are meanings of the Latin prefix con-. The prefix in question links etymologically to the preposition cum ("with"). The pronunciation will be "kon" in Church and secular Latin.
The prefix "nov" is Latin. It comes from the Latin word "novem," meaning nine.
Quad- which comes from the Latin word quattuor"four"
quint or quinque
The Latin prefix for "before" is "pre", smart guy.