Definition of Homology

1. Noun. The quality of being similar or corresponding in position or value or structure or function.

Generic synonyms: Similarity
Derivative terms: Homologic, Homological, Homologize, Homologize, Homologous

Definition of Homology

1. n. The quality of being homologous; correspondence; relation; as, the homologyof similar polygons.

Definition of Homology

1. Noun. A homologous relationship. ¹

2. Noun. (biology) A correspondence of structures in two life forms with a common evolutionary origin, such as flippers and hands. ¹

3. Noun. (chemistry) The relationship between the elements in the same group of the periodic table, or between organic compounds in a homologous series. ¹

4. Noun. (mathematics) A theory associating a system of quotient groups to each topological space. ¹

5. Noun. (mathematics) A system of quotient groups associated to a topological space. ¹

6. Noun. (genetics) The presence of the same series of bases in related genes. ¹

¹ Source:

Definition of Homology

1. similarity in structure [n -GIES]

Medical Definition of Homology

1. Two anatomical structures or behavioural traits within different organisms which originated from a structure or trait of their common ancestral organism. The structures or traits in their current forms may not necessarily perform the same functions in each organism, nor perform the functions it did in the common ancestor. They may even have become completely unused and therefore vestigial. Compare: analogy. (09 Oct 1997)

Homology Pictures

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Lexicographical Neighbors of Homology

homologous graft
homologous pair
homologous pairs
homologous proteins
homologous recombination
homologous series
homologous serotype
homologous serum jaundice
homologous stimulus
homologous tumour
homology (current term)
homology of strands
homology sphere
homology spheres
homolosine projection
homomeric peptide

Literary usage of Homology

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Encyclopedia Americana: A Library of Universal Knowledge (1918)
"Significance of homology.— To Cuvier ar: his followers homology meant "conformity s type," to the "archetypal plan* established tj the Creator. ..."

2. Biological Lectures Delivered at the Marine Biological Laboratory of Wood's (1895)
"THE EMBRYOLOGICAL CRITERION OF homology. EDMUND B. WILSON. THE word homology is at present generally employed to denote two widely different kinds of ..."

3. On the Genesis of Species by St. George Jackson Mivart (1871)
"Lateral homology.— Vertical homology. — Mr. Herbert Spencer's Explanations. — An Internal Power necessary, as shown by Facts of Comparative Anatomy. ..."

4. Inorganic chemistry by Ira Remsen (1889)
"homology, Homologous Series.—In the above series the first member differs from the ... This relation is known as homology, and such a series is known as an ..."

5. The Dublin Journal of Medical Science (1888)
"AMBROSE BIRMINGHAM read a paper on the homology and inner- vation of the ... There is a considerable amount of uncertainty about the homology of the ..."

6. Zoology for Students and General Readers by Alpheus Spring Packard (1879)
"Analogy and homology.—When we study the Invertebrates alone we see that it is often easy to trace a general identity in form between the more important ..."

7. Elements of Projective Geometry by George Herbert Ling, George Wentworth, David Eugene Smith (1922)
"The point in which all lines joining corresponding points are concurrent is called the center of homology; the line which contains all intersections of ..."

8. The Proceedings of the Iowa Academy of Science by Iowa Academy of Science (1907)
"Morphology and development agree in using the word homology to designate the relation ... Thus a kind of serial homology is found, similar parts being ..."

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