Micropoda, mī-krop′o-da, n.pl. in some systems a division of monomyarian bivalves, with rudimentary feet, including oysters, &c. [Gr. mikros, small, pous, podos, foot.]
Micropsia, mī-krop′si-a, n. an affection of the eye in which objects appear in less than actual size.
Micropterous, mī-krop′te-rus, adj. having short wings or fins.
Micropyle, mī′krō-pīl, n. (bot.) the orifice in the coats of the ovule leading to the apex of the nucleus, through which the pollen-tube penetrates: (zool.) the hilum of an ovum at the point of attachment to the ovary: any opening in the coverings of an ovum by which spermatozoa may find entrance. [Gr. mikros, small, pylē, a gate.]
Microscope, mī′krō-skōp, n. an instrument which magnifies to the eye objects so minute as to be almost or quite undiscernible without its aid.—adjs. Microscop′ic, -al, pertaining to a microscope: made by, or as if by, a microscope: visible only by the aid of a microscope: working with, or as if with, a microscope.—adv. Microscop′ically.—ns. Mī′croscopist, one skilled in the use of the microscope; Mī′croscopy.—Binocular microscope, a microscope with two eye-pieces, for viewing an object with both eyes at once; Compound microscope, a microscope with two sets of lenses so arranged that the image formed by the lower or object glass is again magnified by the upper or eye-piece. [Gr. mikros, little, skopein, to look at.]
Microseism, mī′krō-sizm, n. a slight earthquake tremor.—adjs. Microseis′mic, -al.—ns. Microseis′mograph; Microseismom′etry.
Microsoma, mī-krō-sō′ma, n. one of the minute granules embedded in the hyaline plasm of the protoplasm of vegetable cells:—pl. Microsō′mata. [Gr. mikros, small, sōma, body.]
Microspectroscope, mī-krō-spek′trō-skōp, n. a combination of the spectroscope with the microscope.
Microspore, mī′krō-spōr, n. (bot.) a small asexually produced spore: (zool.) one of the numerous very small spore-like elements produced through the encystment and subdivision of many monads.—n. Microsporan′gium.—adj. Mī′crosporous. [Gr. mikros, small, sporos, a seed.]
Microtome, mī′krō-tōm, n. an instrument for cutting thin sections of objects for microscopic examination.—adj. Microtom′ic.—ns. Microt′omist; Microt′omy. [Gr. mikros, little, temnein, to cut.]