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."
microaerophil
An anaerobe that can tolerate or requires a low oxygen tension.
microaerosol
A suspension in the air of minute particles.
microaerotonometer
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.
microanalysis
microbe
Any micro-organism; especially, a bacterium. Also: a micro-organism.
microbiological (adjective)
microbiologist
Someone who specializes in the science of microbiology or the science concerned with micro-organisms.
microbiology
The science concerned with tiny organisms; including, fungi, protozoa, bacteria, and viruses.
microbion
A microbe.
microbiophagy
Destruction or lysis of micro-organisms by a phage.
microbiophobia, microphobia, mikrophobia (s) (noun) (no plural)
A fanatical distress or fear of microbes and bacteria: Mrs. Clean always had her home immaculately clean and tidy because she was afraid of germs and bugs, and because she suffered from microbiophobia, she washed her laundry every day!
microbiota
1. Microscopic soil organisms not visible with the aid of a hand lens (magnifier).
2. Flora and fauna composed of microscopical organisms.
microbiota

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.