The Collaborative International Dictionary of English v.0.48:

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. [1913 Webster] Harmonic twang! of leather, horn, and brass. --Pope. [1913 Webster] 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. [1913 Webster] 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. [1913 Webster] 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. [1913 Webster]The Collaborative International Dictionary of English v.0.48:

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. [1913 Webster] 2. (Surg.) (a) The uniting of the parts of a wound by stitching. (b) The stitch by which the parts are united. [1913 Webster] 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. [1913 Webster] 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. [1913 Webster] 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. [1913 Webster] Glover's suture, Harmonic suture, etc. See under Glover, Harmonic, etc. [1913 Webster]