(music) The largest of all musical instruments, played from an organ console which produces its sound by sending air through whistles and/or reeds called organ pipes, by direct mechanical action, or modernly, electrically.

The residues of dead plants and animals in various stages of decomposition

plural of mouth organ

A privately published magazine or newspaper, generally for the employees of a company and visitors.

Any of many knobs near the keyboard of an organ used to select different sounds or timbres. / The timbre so produced.

A shorthand system for notating organ music, used mostly by the north German Baroque organ school, and distinguished from musical notation by the use of letter names, octave lines and other symbols instead of notes and accidentals and by the lack of staff lines.

(chemistry) The chemistry of organic compounds (that is, chemical compounds with carbon atoms in a covalent bond).

An organized entity, whether corporate or charitable, that does not exist in any one, central location, but instead exists solely through the Internet

(anatomy) An organ used in sexual reproduction or sexual stimulation.

(anatomy) An effector organ found in some fish (especially electric eels and electric catfish), that can produce a voltage large enough to aid in predation. / (music) electronic organ.