1
a
: 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
2
a(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)
(4)
: any of various similar cruder instruments
b
archaic : any of various musical instruments
especially : wind instrument
3
: a subordinate group or organization that performs specialized functions
the various organs of government
4

organ-

2 of 2

combining form

variants or organo-
1
: organ
organogenesis
2
: organic
organomercurial

Examples of organ in a Sentence

Noun the legislative organ of our government that newspaper is intended as an organ for the whole university community
Recent Examples on the Web
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Noun
Instead, the organ triggers insulin resistance within it. Paul Smaglik, Discover Magazine, 21 Mar. 2025 Sometimes the internal organs are inspected in situ, but more typically they are removed, washed down, and dissected on a water table. Samuel Ashworth, The Atlantic, 20 Mar. 2025 This reminds me of the urban legend involving a person who goes to a bar, gets drugged, wakes up, and sees that an internal organ such as a liver or spleen has been removed. Lance Eliot, Forbes, 19 Mar. 2025 The Dead to Me star advised listeners who suffer from similar symptoms to consider discussing motility issues with their doctors, as MS can slow down the functioning of vital organs. Dan Perry, Newsweek, 18 Mar. 2025 See All Example Sentences for organ

Word History

Etymology

Noun

Middle English, partly from Old English organa, from Latin organum, from Greek organon, literally, tool, instrument; partly from Anglo-French organe, from Latin organum; akin to Greek ergon work — more at work

Combining form

Greek organon

First Known Use

Noun

before the 12th century, in the meaning defined at sense 2b

Time Traveler
The first known use of organ was before the 12th century

Browse Nearby Words

org
See all Nearby Words

Cite this Entry

“Organ.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/organ. Accessed 26 Mar. 2025.

Kids Definition

1
a
: a keyboard musical instrument in which sets of pipes are sounded by compressed air
b
: an electronic keyboard musical instrument by which sounds like those of an organ are made
2
: a part (as a kidney or leaf) of a person, plant, or animal that consists of cells and tissues and is specialized to do a particular task compare system sense 1b
3
: a way of getting something done
courts are organs of government
4
: a publication (as a newspaper or magazine) of a special group

Medical Definition

: a differentiated structure (as a heart or kidney) consisting of cells and tissues and performing some specific function in an organism

More from Merriam-Webster on organ

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