Dixon connected on 4-of-7 three-point tries as the Tigers (17-1, 4-1 Big 12) extended their best start to a season since 1981-82.
Marcus Denmon chipped in with 16 points and nine rebounds for Missouri.
Elston Turner and Khris Middleton led the Aggies (10-7, 1-4) with 13 points apiece.
Toddler uninjured after being knocked over by Obama family dog
Martin Bashir resigns from MSNBC over Sarah Palin comments