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3 definitions found
 for Sine
From The Collaborative International Dictionary of English v.0.48 :

  Sine \Sine\, n. [LL. sinus a sine, L. sinus bosom, used in
     translating the Ar. jaib, properly, bosom, but probably read
     by mistake (the consonants being the same) for an original
     j[imac]ba sine, from Skr. j[imac]va bowstring, chord of an
     arc, sine.] (Trig.)
        (a) The length of a perpendicular drawn from one extremity
            of an arc of a circle to the diameter drawn through
            the other extremity.
        (b) The perpendicular itself. See Sine of angle, below.
            [1913 Webster]
  
     Artificial sines, logarithms of the natural sines, or
        logarithmic sines.
  
     Curve of sines. See Sinusoid.
  
     Natural sines, the decimals expressing the values of the
        sines, the radius being unity.
  
     Sine of an angle, in a circle whose radius is unity, the
        sine of the arc that measures the angle; in a right-angled
        triangle, the side opposite the given angle divided by the
        hypotenuse. See Trigonometrical function, under
        Function.
  
     Versed sine, that part of the diameter between the sine and
        the arc.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Sine \Si"ne\, prep. [L.]
     Without.
     [1913 Webster]

From WordNet (r) 3.0 (2006) :

  sine
      n 1: ratio of the length of the side opposite the given angle to
           the length of the hypotenuse of a right-angled triangle
           [syn: sine, sin]

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