| A | B |
|---|
| unicellular | refers to an organism that has only one cell |
| biathlon | two athletic events in a race |
| triathlon | three athletic events in a race |
| triplets | three babies born at the same time |
| duet | two musicians together |
| trio | three musicians together |
| monolingual | speaking one language |
| bilingual | speaking two languages |
| bisect | divide into two sections |
| trisect | divide into three sections |
| unicycle | a one-wheeled cycle |
| monorail | Railroad track with a single rail or track |
| triceratops | a dinosaur with three horns |
| monologue | a speech or talk given by one person |
| biplane | an airplane with two sets of wings |
| monotone | speech that has only one pitch--sounds like a robot |
| trilingual | speaking three languages |
| mono-; uni- | prefixes meaning "one" |
| bi-; du- | prefixes meaning "two" |
| tri- | prefix meaning "three" |
| tripod | a stand with three legs |
| Duplicate | Two of the same copy |
| Triplicate | Three of the same copy |
