2. Able to see extremely minute objects.

Why has not man a microscopic eye?

Pope.

3. Very small; visible only by the aid of a microscope; as, a

microscopic insect.

Mi`cro*scop"ic*al*ly, adv. By the microscope; with minute inspection;

in a microscopic manner.

Mi*cros"co*pist (?; 277), n. One skilled in, or given to, microscopy.

Mi*cros"co*py (?), n. The use of the microscope; investigation with the

microscope.

Mi"cro*seme (?), a. [Micro- + Gr. &?; sign, mark: cf. F. microsème.]

(Anat.) Having the orbital index relatively small; having the orbits

broad transversely; -- opposed to megaseme.

<! p. 922 !>

Mi`cro*spec"tro*scope (m`kr*spk"tr*skp or m`kr-), n. [Micro- +

spectroscope.] (Physics) A spectroscope arranged for attachment to a

microscope, for observation of the spectrum of light from minute

portions of any substance.

||Mi`cro*spo*ran"gi*um (?), n. [NL. See Micro-, and Sporangium.] (Bot.)

||A sporangium or conceptacle containing only very minute spores. Cf.

||Macrosporangium.

Mi"cro*spore (?), n. [Micro- + spore.] (Bot.) One of the exceedingly

minute spores found in certain flowerless plants, as Selaginella and

Isoetes, which bear two kinds of spores, one very much smaller than the

other. Cf. Macrospore.

Mi`cro*spor"ic (?), a. (Bot.) Of or pertaining to microspores.

Mi"cro*sthene (?), n. [Micro- + Gr. sqe`nos might, strength.] (Zoöl.)

One of a group of mammals having a small size as a typical

characteristic. It includes the lower orders, as the Insectivora,

Cheiroptera, Rodentia, and Edentata.

Mi`cro*sthen"ic (?), a. (Zoöl.) Having a typically small size; of or

pertaining to the microsthenes.

Mi`cro*ta*sim"e*ter (?), n. [Micro- + tasimeter.] (Physics) A

tasimeter, especially when arranged for measuring very small

extensions. See Tasimeter.

Mi"cro*tome (?), n. [Micro- + Gr. te`mnein to cut.] An instrument for

making very thin sections for microscopical examination.

Mi*crot"o*mist (?), n. One who is skilled in or practices microtomy.

Mi*crot"o*my (?), n. The art of using the microtome; investigation

carried on with the microtome.

Mi`cro*volt" (?), n. [Micro- + volt.] (Elec.) A measure of

electro-motive force; the millionth part of one volt.

Mi`cro*we"ber (?), n. [Micro- + weber.] (Elec.) The millionth part of

one weber.

||Mi`cro*zo"a (?), n. pl. [NL., fr. Gr. mikro`s small + zw^,on an

||animal.] (Zoöl.) The Infusoria.

Mi`cro*zo"ö*spore (?), n. [Micro- + zoöspore.] (Bot.) A small motile

spore furnished with two vibratile cilia, found in certain green algæ.

Mi"cro*zyme (?), n. [Micro- + Gr. zy`mh leaven.] (Biol.) A

microörganism which is supposed to act like a ferment in causing or

propagating certain infectious or contagious diseases; a pathogenic

bacterial organism.

Mic`tu*ri"tion (?), n. [L. micturire to desire to make water, v. desid.

fr. mingere, mictum, to make water.] The act of voiding urine; also, a

morbidly frequent passing of the urine, in consequence of disease.

Mid (md), a. [Compar. wanting; superl. Midmost.] [AS. midd; akin to OS.

middi, D. mid (in comp.), OHG. mitti, Icel. miðr, Goth. midjis, L.

medius, Gr. me`sos, Skr. madhya. &radic;271. Cf. Amid, Middle, Midst,

Mean, Mediate, Meridian, Mizzen, Moiety.]

The Gutenberg Webster's Unabridged Dictionary: Section M, N, and O · 第 528 / 2147 题