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 prefix "mono-" derives from the Greek language. The equivalent Latin prefix would be "uni-".
The prefix "nona-" is Latin. It is derived from the Latin word "nonus" meaning "ninth."
Logic is a Greek word; il- is a Latin prefix ( from in- meaning "un-", the n becoming an l before the l of logic.
Hyper/Hypo are from Classical 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 .
Greek and Latin and Sanskrit.
Penta is of Greek origin.
The prefix "nov" is Latin. It comes from the Latin word "novem," meaning nine.
prefix meaning fast
Spect- is Latin for See or Look
Greek klados - to strike
uni (latin) mono (greek) both of them mean one