Micro-

{ Mi″cro– (?), Mi″cr– }. [Gr. μικρόσ small.] A combining form signifying: (a) Small, little, trivial, slight; as, microcosm, microscope. (b) (Metric System, Elec., Mech., etc.)A millionth part of; as, microfarad, microohm, micrometer.