Micro is an English prefix of Greek origin that refers to an object as being smaller than an object or scale of focus, in contrast with macro. Some examples of the prefix "micro" are - microwave, microscope, microphone, microchip and micro-organism. micro- is a prefix in the SI and other systems of units denoting a factor of 10−6 (one millionth). Symbol, µ A shortened reference to microeconomics, microsociology, microbiology or similar fields of science Microcomputer (semi-obsol… (More on Micro)