| hexagonal | Having six sides and six angles; six-sided. Hexagonal system. <chemistry> See Crystallization. Origin: Cf. F. Hexagonal. Source: Websters Dictionary (01 Mar 1998) |
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| spin-lattice relaxation | In nuclear magnetic resonance, the return of the magnetic dipoles of the hydrogen nuclei (magnetization vector) to equilibrium parallel to the magnetic field, after they have been flipped 90 |
| lattice | <microscopy> An orderly arrangement of atoms in a material, usually thought of as an infinite series of cells forming a latticework of atoms in 3-dimensions. (05 Aug 1998) |
| lattice corneal dystrophy | A corneal dystrophy due to localised accumulation of amyloid in a reticular pattern; manifest at puberty and progressing slowly until eventually useful vision is lost; autosomal dominant inheritance. (05 Mar 2000) |