(microbiology) An organism that is too small to be seen by the unaided eye, especially a single-celled organism, such as a bacterium.

(physics) The thousandth part of one millimeter; the millionth part of a meter. / (figuratively) A very tiny amount.

(linguistics) Synonym of breve

The subdiscipline of soil science that studies the functions and activities of soil-based microorganisms.

(biology) The branch of biology that deals with microorganisms, especially their effects on man and other living organisms.

Human nature or the human body as representative of the wider universe; man considered as a miniature counterpart of divine or universal nature. / (obsolete) The human body; a person.

An optical instrument used for observing small objects. / Any instrument for imaging very small objects (such as an electron microscope).

To examine with a microscope, to put under a microscope (literally or figuratively).

A device (transducer) used to convert sound waves into a varying electric current; normally fed into an amplifier and either recorded or transmitted over radio.

(transitive) To put one or more microphones on or in.