| quadrangle |
a closed two-dimensional figure with four sides, such as a rectangle or parallelogram. [3 definitions] |
| quadrant |
one quarter of the arc of a circle. [5 definitions] |
| quadraphonic |
of, concerning, or used for the reproduction of sound, esp. music, over four distinct channels. |
| quadrat |
see "quad2." [2 definitions] |
| quadrate |
a square or rectangle. [5 definitions] |
| quadratic |
of, concerning, or involving mathematical expressions containing a variable that is raised to the second power at most. [2 definitions] |
| quadratic equation |
in algebra, an equation in which the square is the highest power to which the unknown quantity is raised. |
| quadrature |
the act or process of squaring. [3 definitions] |
| quadrennial |
happening once every four years. [3 definitions] |
| quadri- |
four. |
| quadriceps |
a group of four large muscles located at the front of the thigh. |
| quadrilateral |
having four sides. [2 definitions] |
| quadrille1 |
a formal square dance with five separate movements executed by four couples. [2 definitions] |
| quadrille2 |
an eighteenth-century card game for four players. |
| quadrillion |
the number represented by the Arabic numeral 1015. [2 definitions] |
| quadripartite |
having four parts or divisions. [2 definitions] |
| quadriplegia |
paralysis of the entire body, from the neck down. |
| quadrivalent |
having a valence of four; tetravalent. [2 definitions] |
| quadrivium |
in medieval universities, the higher section of the liberal arts, comprising arithmetic, geometry, astronomy, and music. (Cf. trivium.) |
| quadroon |
a person who is one quarter black and three quarters white; the child of a mulatto and a white person. |
| quadrumanous |
having all four feet adapted for grasping, as monkeys and apes. |