Definition of organ
(Entry 1 of 2)
1a
: a differentiated structure (such as a heart, kidney, leaf, or stem) consisting of cells and tissues and performing some specific function in an organism
b
: bodily parts performing a function or cooperating in an activity
the eyes and related structures that make up the visual organs
2a(1)
: a keyboard instrument in which sets of pipes are sounded by compressed air and produce a variety of timbres
— called also pipe organ
(2)
: an electronic keyboard instrument that approximates the sounds and resources of the pipe organ
(3)
: reed organ
(4)
: any of various similar cruder instruments
3
: a subordinate group or organization that performs specialized functions
the various organs of government
4
: periodical
organ-
combining form
variants:
or organo-
Definition of organ- (Entry 2 of 2)
1
: organ
organogenesis
2
: organic
organomercurial
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Merriam-Webster unabridged
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Time Traveler for organ
The first known use of organ was before the 12th century
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