Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z quadcasting The transmission of a quadcast. quadchromatic Involving four colors quadchromatically In a quadchromatic manner quadcopter A rotorcraft propelled by four rotors. quadcore Composed of four cores. quadcycle Synonym of quadracycle. quadder One who rides a quad bike. quaddie A quadrella, a type of bet requiring the bettor to pick the winners of four nominated races at the same track; a bet requiring the selection of four winners of specified matches in a given round of a sporting competition. quaddition An operation that is the same as addition unless one of its operands is 57 or greater, in which case it always yields 5; used by Saul Kripke in an argument against Ludwig Wittgenstein's Philosophical Investigations. quaddle To waddle Quade A surname. quademic A concurrent surge in cases of four different diseases or pathologies. quader To quadrate. quadexciton A quantum combination of four excitons quadfecta A bet in which the bettor must select the winners of the first four places (i.e., first, second, third, and fourth) of a race in the correct order. quadfurcated Quadrifurcated. quadfurcation A forking or division into four branches. Quadi An ancient Germanic people who lived in Moravia. quadjet A jet aircraft powered by four engines. quadkey A key into a quadtree data structure. quadlet A word consisting of four bytes. quadlike Resembling a quad (quadrangular courtyard). quadplex A building divided into four separate residences or commercial premises. quadpod A four-legged stand or mount. quadpolaron A quasiparticle composed of two bipolarons quadpot A bet in which the bettor must correctly pick a placed horse from the third, fourth, fifth and sixth race from any British race meeting. quadra The plinth, or lowest member, of any pedestal, podium, water table, or the like. quadrable Of a plane figure, for which quadrature is possible. quadracial Of or relating to four races. quadracycle Synonym of quadricycle (“four-wheeled pedal cycle”). quadrad A tetrad; a group of four. quadradiate Having four radial arms quadradic Having four parts. Quadradisc A kind of phonograph record using a discrete four-channel quadraphonic system. quadragenarian Synonym of fortysomething: a person between 40 and 49 years old. quadragenarious Synonym of quadragenarian: Of or related to fortysomethings. quadragenary Of or related to the number 40, particularly quadragene An indulgence from 40 days of fasting or similar abstinence, especially during Lent; (later) various equivalent indulgences against punishment in Purgatory. Quadragesima Synonym of Lent. quadragesimal That lasts forty days quadragesimalia quadragesimal sermons or offerings quadragintillion 10¹²³. quadragintireme A vessel with 40 rows of oars. quadral A grammatical number referring to four (or more) things. quadrality A relationship between four objects. quadran A square, a quadrangle. quadrangle Synonym of quadrilateral (“a polygon with four sides”). quadrangled Enclosed in a quadrangular structure quadrangular Having the shape of a quadrangle; in the shape of a quadrangle. quadrangularin Any of a class of stilbene derivatives found in Cissus quadrangularis. quadrangularity The quality of being quadrangular. quadrangularly In a quadrangular shape or manner. quadrangulate To divide (a plane or other surface) into quadrangles, often by removing the dividing line between two adjacent triangles (following a previous triangulation). quadrangulation A graph embedded in a surface such that every face is a quadrangle. quadrans A bronze coin of the Roman republic worth one quarter of an as. quadranscentennial The twenty-fifth anniversary of an event or happening. quadrant One of the four sections made by dividing an area with two perpendicular lines. quadrantal An ancient Roman unit of measure for liquids. quadrantally In an arrangement of quadrants quadrantanopia The loss of vision in one or more quadrants of the field of view. quadrantanopic Afflicted with, or relating to, quadrantanopia. quadrantanopsia quadrantanopia quadrantectomy Excision of the tissue in a breast quadrant, as a type of partial mastectomy. quadrantic Of, pertaining to, or affecting a quadrant. Quadrantid Any of the meteors in a January meteor shower whose radiant is inside the constellation Boötes. quadrantile quadrantal quadrantlike Resembling or characteristic of a quadrant. quadrantly squarely quadranucleotide a codon containing four nucleotides quadraphonic Employing four independent channels or speakers. quadraphonics quadraphonic sound quadraphony Sound, in a sound system, originating from four speakers. quadrarch The captain of a quadreme quadrasonic quadraphonic quadrasonics Synonym of quadraphonics. quadrat An area of land, marked for studying its plants, animals, soil, natural processes, etc. quadrate Having four equal sides, the opposite sides parallel, and four right angles; square. quadrateness Quality of being quadrate. quadratfrei Synonym of squarefree. quadrathlete An athlete who takes part in a quadrathlon. quadrathlon A contest involving four successive events, usually swimming, kayaking, cycling, and running. quadratic Square-shaped. quadratical quadratic quadratically In a quadratic way. quadraticity The quality of being quadratic. quadratite A tetragonal-ditetragonal dipyramidal mineral containing arsenic, cadmium, lead, silver, and sulfur. quadrative squared quadratization An approximation of a system obtained by quadratizing it. quadratize To approximate a system with a quadratic system. quadratocranial Relating to the quadrate bone and the cranium quadratojugal Of or pertaining to the quadrate and jugal bones. quadratojugular A bone found in some reptiles, amphibians, and birds in front of the quadrate at the base of the temporal fossa. quadratomandibular Relating to the quadrate bone and the mandible. quadratosquamosal Both quadrate and squamosal quadratrix A curve having ordinates which are a measure of the area (or quadrature) of another curve. quadratum The quadrate bone. quadrature The process of making something square; squaring. quadraturism An Italian genre of painting that used architectural elements to create illusions of perspective. quadraturist A person who paints quadratures. quadratus Any of several roughly square or rectangular muscles, e.g. in the abdomen, thigh, and eye socket. quadravigesimal A number system with base twenty-four, using the digits 0–9 and A–N (or Greek α-ω without numerals). quadreble A voice in a musical composition (usually for male voices) above the treble; descant. quadrel A square brick or tile; a quarrel. quadrella A bet where the bettor must pick the winners of four nominated races at the same track. quadreme A galley with four banks of oars, one above the other quadrennial Happening every four years. quadrennially Every four years. quadrennium A period of 4 years, particularly (historical) the sets of four years in the ancient Egyptian and Greek calendars. Quadri A surname from Italian. quadriacceleration Synonym of four-acceleration. quadriad A grouping of four things. quadrialate Having four winglike extensions or parts. quadriannulate Having four rings. quadriarticulate Having four joints. quadriaxial Having or relating to four axes. quadriband Supporting four frequency bands quadribasic tetrabasic quadric A surface or curve whose shape is defined in terms of a quadratic equation. quadricapsular Having four capsules quadricarinate Having four carinae. quadricellular Having four cells. quadricentenarian One who or that which is between 400 and 499 years old. quadricentennial Relating to a 400th anniversary. quadricentesimal Based upon the number four hundred quadricep quadriceps quadricephalous Having four heads. quadriceps A muscle having four heads, especially the large extensor at the front of the thigh. quadricepsplasty corrective surgery to the quadriceps muscle quadrichord tetrachord quadrichotomize To divide into four sections quadrichotomized divided into four sections quadriciliate Having four cilia. quadricinium A four-part composition. quadricipital Of or pertaining to the quadriceps. quadricolor Having four colors. quadricolored Having four colors. quadricone A quadric cone. quadriconsonantal which consist of four consonants. quadricopter Synonym of quadcopter. quadricorn Any quadricornous (four-horned) animal quadricornous Having four horns. quadricostate Having four ribs. quadricovariant a covariant of degree 4 quadricrescentoid Having four crescentic folds. quadricriticoid A quadratic criticoid. quadriculated covered with a checkerboard pattern quadricuspid Having four cusps. quadricuspidate Having four cusps. quadricyclane A highly toxic norbornadiene isomer with potential applications in the storage of solar energy. quadricycle A four-wheeled pedal cycle.