Micro- \Mi"cro-\, Micr- \Mi"cr-\ . [Gr. mikro`s 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. [1913 Webster]
Magnetic Ink Character Recognition MICR <business, printer> (MICR) A {character recognition} system using special ink and characters which can be magnetised and read automatically. MICR is used almost exclusively in the banking industry where it is used to print details on cheques to enable automatic processing. (1995-04-13)