Person who opposes another in a contest, battle, etc
2. (Anatomy) anatomy an opponent muscle
adj
3. opposite, as in position
4. (Anatomy) anatomy (of a muscle) bringing two parts into opposition
5. opposing; contrary
[C16: from Latin oppōnere to oppose, from ob- against + pōnere to place]
Barbarian groups were able to weaken the Byzantine Empire<span> because the empire itself had several unprotected areas for warring </span>groups<span> to invade.
Hope this helps!
-Sammy</span>
The Cook Book................