plural of model organism

A person (living or dead) from whom an organ is removed in order to be transplanted into another person. / (chiefly US, slang) A motorcyclist, especially one who does not wear a protective helmet.

plural of micro-organism

Alternative spelling of microorganism

plural of vital organ

An organ of the body which performs a sufficiently important function that damage to the organ can cause death.

(music) A type of electronic organ with a highly distinctive sound.

An organization with charitable purposes only.

(music) Any kind of electronic musical instrument which can emulate the sound of any of the tonewheel-based Hammond organs.

(cybernetics) A process of attraction and repulsion in which the internal organization of a system, normally an open system, increases in complexity without being guided or managed by an outside source.