Microgeology, mī-krō-jē-ol′o-ji, n. the department of geology concerned with the study of microscopic structures.
Micrograph, mī′krō-graf, n. a pantograph instrument for minute writing or drawing: a microscopic picture.—n. Microg′rapher.—adj. Micrograph′ic.—n. Microg′raphy, the description of microscopic objects. [Gr. mikros, little, graphein, write.]
Microhm, mik′rōm, n. an electric unit equal to the millionth part of an ohm.
Microlite, mī′krō-līt, n. a mineral related to pyrochlore.—n. Mī′crolith, a name suggested by Vogelsang in 1867 for the microscopic acicular components of rocks.—adj. Microlith′ic. [Gr. mikros, small, lithos, a stone.]
Micrology, mī-krol′o-ji, n. the branch of science which treats of microscopic objects.—adjs. Microlog′ic, -al.—adv. Microlog′ically.
Micrometer, mī-krom′e-tėr, n. an instrument for measuring minute distances or angles.—adjs. Micromet′ric, -al.—ns. Microm′etry, measuring with a micrometer; Mī′cron, the millionth part of a metre, or 1⁄25400 of an inch; Mī′cro-or′ganism, a microscopic organism. [Gr. mikros, little, metron, measure.]
Microphone, mī′krō-fōn, n. an instrument which renders the faintest sounds distinctly audible.—adjs. Microphon′ic, Microph′onous.—n. Mī′crophony. [Gr. mikros, little, phōnē, sound.]
Microphotography, mī-krō-fō-tog′ra-fi, n. the photographing of objects on a microscopic scale.
Microphyllous, mī-krof′il-us, adj. (bot.) having small leaves. [Gr. mikros, little, phyllon, leaf.]
Microphyte, mī′krō-fīt, n. a microscopic plant, esp. one parasitic.—adjs. Mī′crophytal, Microphyt′ic.