quadragesima

the first Sunday in Lent ;

quadrangle

a rectangular area surrounded on all sides by buildings ; a four-sided polygon ;

quadrangular prism

a prism whose bases are quadrangles ;

quadrant

a measuring instrument for measuring altitude of heavenly bodies ; the area enclosed by two perpendicular radii of a circle ; any of the four areas into which a plane is divided by two orthogonal coordinate axes ; a quarter of the circumference of a circle ; a quarter of the circumference of a circle ;

quadrantanopia

blindness in one fourth of the visual field ;

quadraphonic system

a stereophonic sound recording or reproducing system using four separate channels ;

quadraphony

a stereophonic sound recording or reproducing system using four separate channels ;

quadrate

a square-shaped object ; a cubelike object ;

quadratic

a polynomial of the second degree ; an equation in which the highest power of an unknown quantity is a square ;

quadratic equation

an equation in which the highest power of an unknown quantity is a square ;

quadratic polynomial

a polynomial of the second degree ;

quadratics

a branch of algebra dealing with quadratic equations ;

quadrature

the construction of a square having the same area as some other figure ;

quadrennium

a period of four years ;

quadric

a curve or surface whose equation (in Cartesian coordinates) is of the second degree ;

quadric surface

a curve or surface whose equation (in Cartesian coordinates) is of the second degree ;

quadriceps

a muscle of the thigh that extends the leg ;

quadriceps femoris

a muscle of the thigh that extends the leg ;

quadrigesima sunday

the first Sunday in Lent ;

quadrilateral

a four-sided polygon ;

quadrille

a square dance of 5 or more figures for 4 or more couples ; music for dancing the quadrille ;

quadrillion

the number that is represented as a one followed by 15 zeros ; the number that is represented as a one followed by 24 zeros; "in England they call a septillion a quadrillion" ;

quadrillionth

one part in a quadrillion equal parts ;

quadripara

(obstetrics) woman who has given birth to a viable infant in each of four pregnancies ;

quadriphonic system

a stereophonic sound recording or reproducing system using four separate channels ;

quadriplegia

paralysis of both arms and both legs ;

quadriplegic

a person who is paralyzed in both arms and both legs ;

quadrivium

(Middle Ages) a higher division of the curriculum in a medieval university involving arithmetic and music and geometry and astronomy ;

quadroon

an offspring of a Mulatto and a White parent; a person who is one-quarter Black ;

quadrumvirate

a group of four men ;

quadruped

an animal especially a mammal having four limbs specialized for walking ;

quadruple

a quantity that is four times as great as another ; a set of four similar things considered as a unit ;

quadruple time

a time signature indicating four beats to the bar ;

quadruplet

a set of four similar things considered as a unit ; one of four children born at the same time from the same pregnancy ; the cardinal number that is the sum of three and one ;

quadruplicate

any four copies; any of four things that correspond to one another exactly; "it was signed in quadruplicate" ;

quadrupling

increase by a factor of four ;

quaestor

any of several public officials of ancient Rome (usually in charge of finance and administration) ;

quaff

a hearty draft ;

quaffer

a person who drinks heartily ;

quag

a soft wet area of low-lying land that sinks underfoot ;