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
3
: a subordinate group or organization that performs specialized functions
the various organs of government
4
variants
or organo-
1
: organ
organogenesis
2
: organic
organophosphorus
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
Literary Hub, 20 May 2026
The star is a sensory organ of extraordinary specificity, shaped by millions of years of selection pressure in an environment where the margin between feeding and starving is measured not in seconds, but in milliseconds.
—Scott Travers, Forbes.com, 20 May 2026
But other components of an egg — like temporary organs that form to nourish and stabilize the growing chick and remove waste — weren’t included.
—Adithi Ramakrishnan, Fortune, 20 May 2026
Their names are marked to remember the more than 3700 life-saving organ donation gifts through the unit in 2025 alone.
—Joshua Cole, CBS News, 20 May 2026
See All Example Sentences for organ
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Noun
Instead, hormone signals and the glands that produce them are part of a communication system that organises every cell, turning collections of independently functioning cells, tissues and organs into an interconnected human body.
—Literary Hub, 20 May 2026
The star is a sensory organ of extraordinary specificity, shaped by millions of years of selection pressure in an environment where the margin between feeding and starving is measured not in seconds, but in milliseconds.
—Scott Travers, Forbes.com, 20 May 2026
But other components of an egg — like temporary organs that form to nourish and stabilize the growing chick and remove waste — weren’t included.
—Adithi Ramakrishnan, Fortune, 20 May 2026
Their names are marked to remember the more than 3700 life-saving organ donation gifts through the unit in 2025 alone.
—Joshua Cole, CBS News, 20 May 2026
See All Example Sentences for organ
Cite this Entry
“Organ.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/organ. Accessed 21 May. 2026.
Copy CitationKids Definition
organ
noun
or·gan
ˈȯr-gən 
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
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