| Mohrenheim's space | A triangular depression bounded by the clavicle and the adjacent borders of the deltoid and pectoralis major muscles. Synonym: fossa infraclavicularis, deltoideopectoral triangle, deltoideopectoral trigone, infraclavicular triangle, Mohrenheim's fossa, Mohrenheim's space, regio infraclavicularis, trigonum deltoideopectorale. (05 Mar 2000) |
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| Mohs scale | A qualitative scale in which minerals are classified in order of their increasing hardness, based on the fact that the harder of two materials will scratch the softer and will not be scratched by it. The scale lists 15 substances: 1, talc; 2, gypsum; 3, calcite; 4, fluorite; 5, apatite; 6, orthoclase, periclase; 7, vitreous pure silica; 8, quartz, stellite; 9, topaz; 10, garnet; 11, tantalum carbide, fused zirconia; 12, fused alumina; 13, silicon carbide; 14, boron carbide; 15, diamond. Synonym: Mohs scale. (05 Mar 2000) |
| mohs surgery | A surgical technique used primarily in the treatment of skin neoplasms, especially basal cell or squamous cell carcinoma of the skin. This procedure is a microscopically controlled excision of cutaneous tumours either after fixation in vivo or after freezing the tissue. Serial examinations of fresh tissue specimens are most frequently done. (12 Dec 1998) |
| Mohs' chemosurgery | A technique for removal of skin tumours with a minimum of normal tissue, by prior necrosis with zinc chloride paste, mapping of the tumour site, and excision and microscopic examination of frozen section of thin horizontal layers of tissue, until all of the tumour is removed. More recently, the preliminary step of chemical necrosis has been omitted. Synonym: microscopically controlled surgery, Mohs' micrographic surgery, Mohs' surgery. (05 Mar 2000) |
| Mohs' fresh tissue chemosurgery technique | Chemosurgery in which superficial cancers are excised after fixation in vivo. (05 Mar 2000) |
| Mohs' micrographic surgery | A technique for removal of skin tumours with a minimum of normal tissue, by prior necrosis with zinc chloride paste, mapping of the tumour site, and excision and microscopic examination of frozen section of thin horizontal layers of tissue, until all of the tumour is removed. More recently, the preliminary step of chemical necrosis has been omitted. Synonym: microscopically controlled surgery, Mohs' micrographic surgery, Mohs' surgery. (05 Mar 2000) |
| Mohs' surgery | A technique for removal of skin tumours with a minimum of normal tissue, by prior necrosis with zinc chloride paste, mapping of the tumour site, and excision and microscopic examination of frozen section of thin horizontal layers of tissue, until all of the tumour is removed. More recently, the preliminary step of chemical necrosis has been omitted. Synonym: microscopically controlled surgery, Mohs' micrographic surgery, Mohs' surgery. (05 Mar 2000) |
| Mohs, Frederic | <person> U.S. Surgeon, *1910, who as a medical student devised a system of microscopicaly controlled removal of skin tumours. See: Mohs' fresh tissue chemosurgery technique, Mohs' chemosurgery. (05 Mar 2000) |
| Mohs, Friedrich | <person> German mineralogist, 1773-1839. See: Mohs scale. (05 Mar 2000) |
| moiety | 1. Originally, a half; now, loosely, a portion of something. 2. Functional group. Origin: M.E. Moite, a half (05 Mar 2000) |
| moira | The deity who assigns to every man his lot. Origin: NL, fr. Gr. Source: Websters Dictionary (01 Mar 1998) |
| moire | 1. Originally, a fine textile fabric made of the hair of an Asiatic goat; afterwards, any textile fabric to which a watered appearance is given in the process of calendering. 2. A watered, clouded, or frosted appearance produced upon either textile fabrics or metallic surfaces. Moire antique, a superior kind of thick moire. Origin: F. Cf. Mohair. Source: Websters Dictionary (01 Mar 1998) |
| moire metallique | A crystalline or frosted appearance produced by some acids on tin plate; also, the tin plate thus treated. Origin: F. Source: Websters Dictionary (01 Mar 1998) |
| moire pattern | <microscopy> A pattern developed from interference or light blocking, when gratings, screens, or regularly spaced patterns are superimposed on one another. (05 Aug 1998) |
| moire topography | A method of three-dimensional morphometry in which contour maps are produced from the overlapping interference fringes created when an object is illuminated by beams of coherent light issuing from two different point sources. (12 Dec 1998) |