| A | B |
|---|
| a four-sided enclosure, usually surrounded by buildings | quadrangle |
| one out of four equal parts of a circle; one section of a four-section coordinate grid | quadrant |
| happening every four years | quadrennial |
| a muscle group consisting of four muscles that is located along the front of the thigh | quadriceps |
| a plane figure in geometry that has four sides | quadrilateral |
| the ability to speak four languages | quadrilingual |
| to cut or divide into four equal parts | quadrisect |
| an animal with four feet | quadruped |
| to create four times as much or as many of something | quardruple |
| a collection or group of four | quadruplet |
