| meatoscope | <instrument> A speculum for examining a natural passage, as the urethra. Origin: Meatus + -scope. Source: Websters Dictionary (01 Mar 1998) |
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| meatoscopy | Inspection, usually instrumental, of any meatus, especially of the meatus of the urethra. Origin: meato-+ G. Skopeo, to view (05 Mar 2000) |
| meatotome | <surgery> An instrument for cutting into the urethra so as to enlarge its orifice. Origin: Meatus + Gr. To cut. Source: Websters Dictionary (01 Mar 1998) |
| meatotomy | An incision made to enlarge a meatus, e.g., of the urethra or ureter. Origin: meato-+ G. Tome, incision (05 Mar 2000) |
| meatus | <anatomy> A natural passage or canal; as, the external auditory meatus. Origin: L, a going, passage, fr. Meare to go. (11 Mar 1998) |
| meatus acusticus externus | The passage leading inward through the tympanic portion of the temporal bone, from the auricle to the tympanic membrane; it consists of a bony (inner) portion and a fibrocartilaginous (outer) portion, the cartilaginous external acoustic meatus. Synonym: meatus acusticus externus, acoustic meatus, antrum auris, auditory canal, external auditory meatus. (05 Mar 2000) |
| meatus acusticus internus | internal acoustic meatus |
| meatus nasi | Any of three passages in the nasal cavity formed by the projection of the conchae: middle nasal meatus, lies below the inferior concha; middle nasal meatus, lies between the middle and inferior conchae; superior nasal meatus, lies between the superior and middle conchae. Synonym: meatus nasi. (05 Mar 2000) |
| meatus nasopharyngeus | The posterior part of the nasal cavity from the posterior limits of the conchae to the choanae. Synonym: meatus nasopharyngeus. (05 Mar 2000) |
| meatus urinarius | The slitlike opening of the urethra in the glans penis, the external orifice of the urethra (in the female) in the vestibule, usually upon a slight elevation, the papilla urethrae. Synonym: ostium urethrae externum, external opening of urethra, meatus urinarius, orificium urethrae externum. (05 Mar 2000) |
| mebanazine | (1-Phenylethyl)methylbenzyl)hydrazine;an antidepressant with inhibitory effect on monoamine oxidase. (05 Mar 2000) |
| mebendazole | <chemical> Methyl-5-benzoyl-2-benzimidazolecarbamate. A nematocide in humans and animals. It acts by interfering with the carbohydrate metabolism and associated energy production of the parasite. Pharmacological action: antinematodal agent. Chemical name: Carbamic acid, (5-benzoyl-1H-benzimidazol-2-yl)-, methyl ester (12 Dec 1998) |
| mebeverine hydrochloride | 4-[Ethyl(p-methoxy-alpha-methylphenethyl)amino] butyl veratrate hydrochloride;an intestinal antispasmodic. (05 Mar 2000) |
| mebhydroline | 5-Benzyl-2,3,4,5-tetrahydro-2-methyl-1H-pyrido[4,3-b]indole;an antihistaminic. (05 Mar 2000) |
| mebrophenhydramine | 2-(p-Bromo-alpha-methyl-alpha-phenylbenzyloxy)-N,N-dimethylethylamine;an antihistaminic. (05 Mar 2000) |