harmonic suture

Harmonic \Har*mon"ic\ (h[aum]r*m[o^]n"[i^]k), Harmonical
\Har*mon"ic*al\ (-[i^]*kal), a. [L. harmonicus, Gr. "armoniko`s;
   cf. F. harmonique. See {Harmony}.]
   1. Concordant; musical; consonant; as, harmonic sounds.
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            Harmonic twang! of leather, horn, and brass. --Pope.
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   2. (Mus.) Relating to harmony, -- as melodic relates to
      melody; harmonious; esp., relating to the accessory sounds
      or overtones which accompany the predominant and apparent
      single tone of any string or sonorous body.
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   3. (Math.) Having relations or properties bearing some
      resemblance to those of musical consonances; -- said of
      certain numbers, ratios, proportions, points, lines,
      motions, and the like.
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   {Harmonic interval} (Mus.), the distance between two notes of
      a chord, or two consonant notes.

   {Harmonical mean} (Arith. & Alg.), certain relations of
      numbers and quantities, which bear an analogy to musical
      consonances.

   {Harmonic motion}, the motion of the point A, of the foot of
      the perpendicular PA, when P moves uniformly in the
      circumference of a circle, and PA is drawn perpendicularly
      upon a fixed diameter of the circle. This is simple
      harmonic motion. The combinations, in any way, of two or
      more simple harmonic motions, make other kinds of harmonic
      motion. The motion of the pendulum bob of a clock is
      approximately simple harmonic motion.

   {Harmonic proportion}. See under {Proportion}.

   {Harmonic series} or {Harmonic progression}. See under
      {Progression}.

   {Spherical harmonic analysis}, a mathematical method,
      sometimes referred to as that of {Laplace's Coefficients},
      which has for its object the expression of an arbitrary,
      periodic function of two independent variables, in the
      proper form for a large class of physical problems,
      involving arbitrary data, over a spherical surface, and
      the deduction of solutions for every point of space. The
      functions employed in this method are called spherical
      harmonic functions. --Thomson & Tait.

   {Harmonic suture} (Anat.), an articulation by simple
      apposition of comparatively smooth surfaces or edges, as
      between the two superior maxillary bones in man; -- called
      also {harmonia}, and {harmony}.

   {Harmonic triad} (Mus.), the chord of a note with its third
      and fifth; the common chord.
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Suture \Su"ture\, n. [L. sutura, fr. suere, sutum, to sew or
   stitch: cf. F. suture. See {Sew} to unite with thread.]
   1. The act of sewing; also, the line along which two things
      or parts are sewed together, or are united so as to form a
      seam, or that which resembles a seam.
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   2. (Surg.)
      (a) The uniting of the parts of a wound by stitching.
      (b) The stitch by which the parts are united.
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   3. (Anat.) The line of union, or seam, in an immovable
      articulation, like those between the bones of the skull;
      also, such an articulation itself; synarthrosis. See
      {Harmonic suture}, under {Harmonic}.
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   4. (Bot.)
      (a) The line, or seam, formed by the union of two margins
          in any part of a plant; as, the ventral suture of a
          legume.
      (b) A line resembling a seam; as, the dorsal suture of a
          legume, which really corresponds to a midrib.
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   5. (Zool.)
      (a) The line at which the elytra of a beetle meet and are
          sometimes confluent.
      (b) A seam, or impressed line, as between the segments of
          a crustacean, or between the whorls of a univalve
          shell.
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   {Glover's suture}, {Harmonic suture}, etc. See under
      {Glover}, {Harmonic}, etc.
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