| microorganism | <microbiology> A microscopic organism, those of medical interest include bacteria, viruses, algae, fungi and protozoa. (13 Nov 1997) |
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| micropantograph | A kind of pantograph which produces copies microscopically minute. Origin: Micro- + pantograph. Source: Websters Dictionary (01 Mar 1998) |
| microparasite | A parasitic microorganism. (05 Mar 2000) |
| microparasites | <epidemiology> Typically, viruses, bacteria, fungi and protozoa. More generally, parasites which multiply within their definitive hosts. Microparasites are characterised by small size, short generation times, and a tendency to induce immunity to reinfection in those hosts that survive. The duration of infection is usually short in relation to the lifespan of the host, but there are important exceptions, such as the slow viruses. The key epidemiological variable, by contrast with macroparasites, is whether or not the individual host is infected. (05 Dec 1998) |
| microparticle enzyme immunoassay | A technique in which the solid-phase support consists of very small microparticles in liquid suspension. Specific reagent antibodies are covalently bound to the microparticles. Antigen, if present, is then "sandwiched" between bound antibodies and antigen-specific, enzyme-labelled antibodies. Antigen-antibody complexes are detected and quantitated by analysis of fluorescence from the enzyme-substrate interaction. Acronym: MEIA (05 Mar 2000) |
| micropathology | The microscopic study of disease changes. Origin: micro-+ G. Pathos, suffering, + logos, study (05 Mar 2000) |
| micropegmatite | <chemical> A rock showing under the microscope the structure of a graphic granite (pegmatite). Micropegmatit"ic. Origin: Micro- + pegmatite. Source: Websters Dictionary (01 Mar 1998) |
| micropenis | Abnormally small penis. Synonym: microphallus. (05 Mar 2000) |
| microperoxidase | <enzyme> Part of a cytochrome C molecule that retains haem group and has peroxidase activity. (18 Nov 1997) |
| microperoxisome | <cell biology> Small peroxisomes of 150-250 nm diameter found in most cells. Origin: Gr. Soma = body (18 Nov 1997) |
| microphage | A polymorphonuclear leukocyte that is phagocytic. See: phagocyte. Synonym: microphagocyte. Origin: micro-+ phag(ocyte) (05 Mar 2000) |
| microphagocyte | A polymorphonuclear leukocyte that is phagocytic. See: phagocyte. Synonym: microphagocyte. Origin: micro-+ phag(ocyte) (05 Mar 2000) |
| microphallus | A congenital underdevelopment of the penis. (27 Sep 1997) |
| microphobia | <psychology> Fear of minute objects, microorganisms, germs, etc. Origin: micro-+ G. Phobos, fear (05 Mar 2000) |
| microphone | <physics> An instrument for intensifying and making audible very feeble sounds. It produces its effects by the changes of intensity in an electric current, occasioned by the variations in the contact resistance of conducting bodies, especially of imperfect conductors, under the action of acoustic vibrations. Origin: Micro- + Gr. Sound, voice: cf. F. Microphone. Source: Websters Dictionary (01 Mar 1998) |