| A | B |
|---|
| biweekly | happening once every two weeks |
| bicycle | a lightweight vehicle consisting of a metal frame with two wheels |
| triangle | a plane figure having three sides and three angles |
| triple | three times as much; hit by which a batter goes to 3rd base in baseball |
| triplets | one of three children born at the same time to the same mother |
| semicircle | half of a circle |
| semisweet | moderate sweet |
| semifinals | the two games, matches, or rounds that come before the final one in a tournament |
| unison | harmonious combination or union; agreement |
| universal | existing everywhere |
| bifocals | having two focuses; lenses in classes that have two sections of different focal lengths--one for distance and one for near vision |
| bicentennial | having to do with a period of 200 years |
| biceps | any muscle having two heads or origins; the large muscle in the front part of the upper arm |
| tripod | a three-legged support for a camera |
| trillion | a number follows by 12 zeros |
| semiprivate | partly private |
| semicolon | a mark of punctuation (;) that shows a separation not so complete as that shown by a period, but greater than that of a comma |
| unicycle | a vehicle consisting of a frame mounted on a single wheel |
| unique | having no like or equal; being the only one of its kind |
| unify | make or form into one; unite |
