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Reference.org
Meronomy
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<p>A meronomy or partonomy is a hierarchical <a href="/facts/Taxonomy/QRvFI267">taxonomy</a> that deals with part–whole relationships. For example, a car has parts that include engine, body and wheels; and the body has parts that include doors and windows. </p><p>These conceptual structures are used in <a href="/facts/Linguistics/oQuamvf2">linguistics</a> and <a href="/facts/Computer_science/lN3pEyPz">computer science</a>, with applications in <a href="/facts/Biology/1M1ee3pB">biology</a>. The part–whole relationship is sometimes referred to as <i>HAS-A</i>, and corresponds to object composition in <a href="/facts/Object-oriented_programming/TxNMEcao">object-oriented programming</a>. </p><p>The study of meronomy is known as <i><a href="/facts/Mereology/WwzUjB95">mereology</a></i>, and in linguistics a <i>meronym</i> is the name given to a constituent part of, a substance of, or a member of something. "X" is a meronym of "Y" if an X is a part of a Y. The unit of organisation that corresponds to the taxonomical taxon is the meron. </p>