Word List: quad- quad- = four

a plane figure in geometry that has four sides (including square, rectangle, rhombus, parallelogram, and trapezoid)

quadrilateral a plane figure in geometry that has four sides (including square, rectangle, rhombus, parallelogram, and trapezoid)

the ability to speak four languages

quadrilingual the ability to speak four languages

one out of four equal parts of a circle; one section of a four-section coordinate grid

quadrant one out of four equal parts of a circle; one section of a four-section coordinate grid

a collection or group of four; one of four babies born from the same mother at the same time

quadruplet a collection or group of four; one of four babies born from the same mother at the same time

a muscle group consisting of four muscles that is located along the front of the thigh

quadriceps a muscle group consisting of four muscles that is located along the front of the thigh

a four -sided enclosure, usually surrounded by buildings

quadrangle a four -sided enclosure, usually surrounded by buildings

happening every four equal years Presidential elections are every four years. The next presidential election is 2016. Olympics happens every four years.

quadrennial happening every four equal years Presidential elections are every four years. The next presidential election is 2016. Olympics happens every four years.

an animal with four feet

quadruped an animal with four feet

to create four times as much or as many of something

quadruple to create four times as much or as many of something

to cut or divide into four equal parts

quadrisect to cut or divide into four equal parts