| A | B |
|---|
| monologue | a long speech made by one person |
| monopod | a one-legged support for a camera, fishing rod, or other hand-held device |
| monopoly | complete control by one person or group |
| monotone | sounds made in a single tone of voice |
| biennial | every two years; every other year |
| bisect | to divide or cut into two parts |
| binary | involving two; dual |
| bicameral | having two chambers or branches (government) |
| biweekly | happening every two weeks, happening twice a week |
| bimonthly | happening every two months; happening twice a month |
| biceps | the large muscle in the upper arm |
| tripod | a three-legged stand for supporting a camera or other device |
| tricolor | a flag having three bands of color |
| trilogy | a group or series of three things |
| trigonometry | a type of math involving the relationships between the sides and angles of triangles |
| tricentennial | the three-hundredth anniversary of an event |
| triathlon | a competition consisting of three different events |
| triplets | three children born at the same time from the same mother |
| triennial | lasting for three years |
