English-Thai Dictionary

quadrature

N การ สร้าง สี่เหลี่ยมจัตุรัส  kan-sang-se-liam-jad-tu-rad

 

Webster's 1828 Dictionary

QUADRATURE

n.[L. quadratura.] 1. The act of squaring; the reducing of a figure to a square. Thus the finding of a square which shall contain just as much area as a circle or a triangle, is the quadrature of that circle or triangle.
2. A quadrate; a square.
3. In astronomy, the aspect of the moon when distant from the sun 9 degrees or a quarter of the circle; or when the moon is at an equal distance from the points of conjunction and opposition.
Quadrature of curves, in mathematics, the finding of rectilineal figures containing the same areas as figures bounded by curved lines.

 

Webster's 1913 Dictionary

QUADRATURE

Quad "ra *ture, n. Etym: [L. quadratura: cf. F. quadrature. See Quadrate, a.]

 

1. (Math. )

 

Defn: The act of squaring; the finding of a square having the same area as some given curvilinear figure; as, the quadrature of a circle; the operation of finding an expression for the area of a figure bounded wholly or in part by a curved line, as by a curve, two ordinates, and the axis of abscissas.

 

2. A quadrate; a square. Milton.

 

3. (Integral Calculus )

 

Defn: The integral used in obtaining the area bounded by a curve; hence, the definite integral of the product of any function of one variable into the differential of that variable.

 

4. (Astron.)

 

Defn: The position of one heavenly body in respect to another when distant from it 9 º, or a quarter of a circle, as the moon when at an equal distance from the points of conjunction and opposition. Quadrature of the moon (Astron.), the position of the moon when one half of the disk is illuminated. -- Quadrature of an orbit (Astron.), a point in an orbit which is at either extremity of the latus rectum drawn through the empty focus of the orbit.

 

New American Oxford Dictionary

quadrature

quad ra ture |ˈkwädrəˌCHo͝or, -ˌCHər ˈkwɑdrətʃər | ▶noun 1 Mathematics the process of constructing a square with an area equal to that of a circle, or of another figure bounded by a curve. 2 Astronomy the position of the moon or a planet when it is 90 ° from the sun as viewed from the earth. 3 Electronics a phase difference of 90 ° between two waves of the same frequency, as in the color difference signals of a television screen. ORIGIN mid 16th cent. (as a mathematical term ): from Latin quadratura ‘a square, squaring, ’ from quadrare (see quadrate ).

 

quadrature amplitude modulation

quad ra ture am pli tude mod u la tion ▶noun Telecommunications a modulation system used in microwave and satellite communication, involving phase and amplitude modulation of a carrier wave.

 

Oxford Dictionary

quadrature

quadrature |ˈkwɒdrətʃə | ▶noun [ mass noun ] 1 Mathematics the process of constructing a square with an area equal to that of a circle, or of another figure bounded by a curve. 2 Astronomy the position of the moon or a planet when it is 90 ° from the sun as viewed from the earth. 3 Electronics a phase difference of 90 degrees between two waves of the same frequency, as in the colour difference signals of a television screen. ORIGIN mid 16th cent. (as a mathematical term ): from Latin quadratura ‘a square, squaring ’, from quadrare (see quadrate ).

 

quadrature amplitude modulation

quad ¦ra |ture amp ¦li |tude modu |la ¦tion ▶noun [ mass noun ] Telecommunications a modulation system used in microwave and satellite communication, involving phase and amplitude modulation of a carrier wave.

 

French Dictionary

quadrature

quadrature n. f. nom féminin géométrie Construction d ’un carré. LOCUTION Quadrature du cercle. figuré Problème insoluble. Prononciation La première syllabe se prononce ka ou koua, [kadratyr, kwadratyr ]