micro-, micr-

(Greek: small, tiny; also, a decimal prefix used in the international metric system for measurements)

One millionth part of [something]; in the metric system: 10-6 [0.000 001].

microcosm (s), microcosms (pl)
1. A miniature copy of something, especially when it represents or stands for a larger whole.
2. A small, representative system having analogies to a larger system in constitution, configuration, or development.
3. A small part of the whole universe, as, for example, an individual human life.
The ecology of a microhabitat (very small area).
microfauna (s) (noun), microfaunas (pl)
1. Tiny animals which are not visible to the naked eye of humans.
2. A localized group of animals.
3. The animals of a microhabitat or a small, specialized, habitat.
microfaunal (adjective)
A reference to tiny animals; especially, those invisible to the naked eye.
1. Plants that can be seen only under a microscope; bacteria are often considered to be microflora.
2. Living microorganisms that are so small that they can be seen only with a microscope and that maintain a more or less constant presence in a particular area; for example, the pharynx or the rumen and includes bacteria, viruses, protozoa, and fungi.
A reference to a group or colony of microorganisms that are present in a specific, localized location.
A dwarf queen ant.

Related "few, small, less, little" word units: mini-; mio-, meio-; nano-; oligo-, olig-.

Related "metric" families: yotta; zetta; exa; peta; tera; giga; mega; kilo; hecto; deka; deci; centi; milli; nano; pico; femto; atto; zepto; yocto.