| AQUAEROBICS | • aquaerobics n. Synonym of water aerobics. • AQUAEROBICS n. a system of exercises, similar to aerobics, performed to music in chest-high water, also AQUAROBICS. |
| EQUATORIALS | • equatorials n. Plural of equatorial. • EQUATORIAL n. an equatorial telescope. |
| MICROQUAKES | • microquakes n. Plural of microquake. • MICROQUAKE n. a very small earthquake. |
| OUTQUARTERS | • outquarters n. Quarters situated away from headquarters. • OUTQUARTERS n. quarters situated away from headquarters. |
| QUADCOPTERS | • quadcopters n. Plural of quadcopter. • QUADCOPTER n. a pilotless four-rotor helicopter. |
| QUADRICONES | • quadricones n. Plural of quadricone. • QUADRICONE n. a quadric cone, or cone having a conic as base. |
| QUADRIPOLES | • quadripoles n. Plural of quadripole. • QUADRIPOLE n. a network with two input and two output terminals. |
| QUADRUPOLES | • quadrupoles n. Plural of quadrupole. • QUADRUPOLE n. a system composed of two dipoles of equal but oppositely directed moment. |
| QUAESTORIAL | • quaestorial adj. Of or relating to a quaestor. • QUAESTORIAL adj. relating to the office of quaestor, also QUESTORIAL. |
| QUARRELLOUS | • quarrellous adj. Alternative form of quarrelous. • QUARRELLOUS adj. (Shakespeare) giving to quarrelling. |
| QUARRELSOME | • quarrelsome adj. Argumentative; fond of or prone to quarreling. • QUARRELSOME adj. apt or disposed to quarrel in an often petty manner. |
| QUATERNIONS | • quaternions n. Plural of quaternion. • QUATERNION n. a set or group of four; the operation of changing one vector into another, or the quotient of two vectors. |
| QUATREFOILS | • quatrefoils n. Plural of quatrefoil. • QUATREFOIL n. a four-petalled flower or leaf of four leaflets; an openwork design or ornament divided by cusps into four lobes, also QUATREFEUILLE. |
| QUESTIONARY | • questionary n. A questionnaire. • questionary n. (Archaic) One who makes it his business to seek after relics and carry them about for sale. • questionary adj. Inquiring; asking questions; testing. |
| ROQUELAURES | • roquelaures n. Plural of roquelaure. • ROQUELAURE n. a cloak reaching about to, or just below, the knees, worn in the 18th century, also ROCKLAY, ROKELAY. |
| SQUARSONAGE | • squarsonage n. A squarson’s residence. • SQUARSONAGE n. the dwelling of a squarson. |
| TERRAQUEOUS | • terraqueous adj. Consisting of or involving earth and water. • terraqueous adj. Of a heavenly body, comprising both land and water, like the Earth. • TERRAQUEOUS adj. consisting of land and water, as the earth. |