plural of proto-organism

A prehistoric organism.

An organism that is not directly dependent on another organism for survival.

plural of free-living organism

An organization which secretly acts as the public face of a covert group.

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

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.

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

(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.

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