sine

[ sahyn ]

/ saɪn /

noun

Trigonometry.

(in a right triangle) the ratio of the side opposite a given acute angle to the hypotenuse.
(of an angle) a trigonometric function equal to the ratio of the ordinate of the end point of the arc to the radius vector of this end point, the origin being at the center of the circle on which the arc lies and the initial point of the arc being on the x-axis. Abbreviation: sin

Geometry. (originally) a perpendicular line drawn from one extremity of an arc of a circle to the diameter that passes through its other extremity.

Mathematics. (of a real or complex number x) the function sin x defined by the infinite series x − (x3/3!) + (x5/5!) − + …, where ! denotes factorial.Compare cosine (def. 2), factorial (def. 1).

Origin of sine

1585–95; <New Latin, Latin sinus a curve, fold, pocket, translation of Arabic jayb literally, pocket, by folk etymology <Sanskrit jiyā, jyā chord of an arc, literally, bowstring

Words nearby sine

Sindbis fever, Sindbis virus, Sindhi, sindon, sindonology, sine, sinecure, sine curve, sine die, Sinemet, sine prole

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for sine

That accumulation of identities is already a sine qua non when speaking of Hispanics, like Zimmerman.
George Zimmerman, Hispanics, and the Messy Nature of American Identity|Ilan Stavans|April 6, 2012|DAILY BEAST
In the land of the industrial revolution, foreign ownership and management is the sine qua non of industrial success.
Britain is in No Position to Rule the Waves|Noah Kristula-Green|March 8, 2012|DAILY BEAST
This unsmoked, wet-cured ham is the sine qua non of Parisian butcher shops: a light, ephemeral meat, sweet but umami.
Easter's Top Five Hams|Mark Scarbrough|March 30, 2010|DAILY BEAST
What a fool I had been not to have actually made the removal of them a sine qua non before I signed the contract!
Man and Maid|Elinor Glyn

Sound teeth—exceptionally large—and tight lips are a sine qua non.
Sporting Dogs|Frank Townend Barton
Sine wondered vaguely that they should cling to such an unhappy existence.
The Metal Moon|Everett C. Smith
The American commissioners seem to have been startled out of their composure by this sine qua non.
Jefferson and his Colleagues|Allen Johnson
Edwards was depending upon this library to support himself and wife, and the weekly check was a sine qua non.
The Fiction Factory|John Milton Edwards

British Dictionary definitions for sine (1 of 2)

sine¹

/ (saɪn) /

noun (of an angle)

a trigonometric function that in a right-angled triangle is the ratio of the length of the opposite side to that of the hypotenuse
a function that in a circle centred at the origin of a Cartesian coordinate system is the ratio of the ordinate of a point on the circumference to the radius of the circle

Abbreviation: sin

Word Origin for sine

C16: from Latin sinus a bend; in New Latin, sinus was mistaken as a translation of Arabic jiba sine (from Sanskrit jīva, literally: bowstring) because of confusion with Arabic jaib curve

British Dictionary definitions for sine (2 of 2)

sine²

/ (ˈsaɪnɪ) /

preposition

(esp in Latin phrases or legal terms) lacking; without

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for sine

sine

[ sīn ]

The ratio of the length of the side opposite an acute angle in a right triangle to the length of the hypotenuse.

The ordinate of the endpoint of an arc of a unit circle centered at the origin of a Cartesian coordinate system, the arc being of length x and measured counterclockwise from the point (1, 0) if x is positive or clockwise if x is negative.

A function of a number x, equal to the sine of an angle whose measure in radians is equal to x.

单词	sine
释义	sine [ sahyn ] / saɪn / noun Trigonometry. (in a right triangle) the ratio of the side opposite a given acute angle to the hypotenuse. (of an angle) a trigonometric function equal to the ratio of the ordinate of the end point of the arc to the radius vector of this end point, the origin being at the center of the circle on which the arc lies and the initial point of the arc being on the x-axis. Abbreviation: sin Geometry. (originally) a perpendicular line drawn from one extremity of an arc of a circle to the diameter that passes through its other extremity. Mathematics. (of a real or complex number x) the function sin x defined by the infinite series x − (x3/3!) + (x5/5!) − + …, where ! denotes factorial.Compare cosine (def. 2), factorial (def. 1). Origin of sine 1585–95; <New Latin, Latin sinus a curve, fold, pocket, translation of Arabic jayb literally, pocket, by folk etymology <Sanskrit jiyā, jyā chord of an arc, literally, bowstring Words nearby sine Sindbis fever, Sindbis virus, Sindhi, sindon, sindonology, sine, sinecure, sine curve, sine die, Sinemet, sine prole Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for sine That accumulation of identities is already a sine qua non when speaking of Hispanics, like Zimmerman. George Zimmerman, Hispanics, and the Messy Nature of American Identity\|Ilan Stavans\|April 6, 2012\|DAILY BEAST In the land of the industrial revolution, foreign ownership and management is the sine qua non of industrial success. Britain is in No Position to Rule the Waves\|Noah Kristula-Green\|March 8, 2012\|DAILY BEAST This unsmoked, wet-cured ham is the sine qua non of Parisian butcher shops: a light, ephemeral meat, sweet but umami. Easter's Top Five Hams\|Mark Scarbrough\|March 30, 2010\|DAILY BEAST What a fool I had been not to have actually made the removal of them a sine qua non before I signed the contract! Man and Maid\|Elinor Glyn Sound teeth—exceptionally large—and tight lips are a sine qua non. Sporting Dogs\|Frank Townend Barton Sine wondered vaguely that they should cling to such an unhappy existence. The Metal Moon\|Everett C. Smith The American commissioners seem to have been startled out of their composure by this sine qua non. Jefferson and his Colleagues\|Allen Johnson Edwards was depending upon this library to support himself and wife, and the weekly check was a sine qua non. The Fiction Factory\|John Milton Edwards British Dictionary definitions for sine (1 of 2) sine¹ / (saɪn) / noun (of an angle) a trigonometric function that in a right-angled triangle is the ratio of the length of the opposite side to that of the hypotenuse a function that in a circle centred at the origin of a Cartesian coordinate system is the ratio of the ordinate of a point on the circumference to the radius of the circle Abbreviation: sin Word Origin for sine C16: from Latin sinus a bend; in New Latin, sinus was mistaken as a translation of Arabic jiba sine (from Sanskrit jīva, literally: bowstring) because of confusion with Arabic jaib curve British Dictionary definitions for sine (2 of 2) sine² / (ˈsaɪnɪ) / preposition (esp in Latin phrases or legal terms) lacking; without Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for sine sine [ sīn ] The ratio of the length of the side opposite an acute angle in a right triangle to the length of the hypotenuse. The ordinate of the endpoint of an arc of a unit circle centered at the origin of a Cartesian coordinate system, the arc being of length x and measured counterclockwise from the point (1, 0) if x is positive or clockwise if x is negative. A function of a number x, equal to the sine of an angle whose measure in radians is equal to x. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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