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].

micracoustic, microacoustic (adjective), more micracoustic, most micracoustic
A reference to an instrument that can be used to magnify small sounds so they can be heard: "There are micracoustic, or microacoustic, devices which can make otherwise impossible sounds audible."
An anaerobe that can tolerate or requires a low oxygen tension.
A suspension in the air of minute particles.
An instrument for determining the amount of gases dissolved in the blood.
microaesthete (s) (noun), micraesthetes (pl)
Sensory-nerve endings in Mollusca; such as, squid, cuttlefish, and octopi that are thought to be tactile (for touching): Molluscas have a varied range of body structures, but biologists know that they have micraesthetes which they use for sensing their environmental contacts.
Any micro-organism; especially, a bacterium. Also: a micro-organism.
microbiological (adjective)
Someone who specializes in the science of microbiology or the science concerned with micro-organisms.
The science concerned with tiny organisms; including, fungi, protozoa, bacteria, and viruses.
A microbe.
Destruction or lysis of micro-organisms by a phage.
microbiophobia, microphobia, mikrophobia
A fanatical distress or fear of microbes and bacteria.
1. Microscopic soil organisms not visible with the aid of a hand lens (magnifier).
2. Flora and fauna composed of microscopical organisms.

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.