homology
[ huh-mol-uh-jee, hoh- ]
/ həˈmɒl ə dʒi, hoʊ- /
noun, plural ho·mol·o·gies.
the state of being homologous; homologous relation or correspondence.
Biology.
- a fundamental similarity based on common descent.
- a structural similarity of two segments of one animal based on a common developmental origin.
Chemistry.
the similarity of organic compounds of a series in which each member differs from its adjacent compounds by a fixed increment, as by CH2.
Mathematics.
a classification of figures according to certain topological properties.
Origin of homology
Words nearby homology
Example sentences from the Web for homologies
Homologies more perfect than those connecting man with the great group of monkeys could not exist.
The Arena |VariousHomologies of parts are best determinable, ceteris paribus, in the most nearly related forms.
A Guide to the Study of Fishes, Volume 1 (of 2) |David Starr JordanHomologies are not given since these are reviewed by Hudson.
Myology and Serology of the Avian Family Fringillidae |William B. Stallcup
British Dictionary definitions for homologies
homology
/ (həʊˈmɒlədʒɪ) /
noun plural -gies
the condition of being homologous
chem
the similarities in chemical behaviour shown by members of a homologous series
zoology
the measurable likenesses between animals, as used in grouping them according to the theory of cladistics
Word Origin for homology
C17: from Greek
homologia agreement, from
homologos agreeing; see
homologate
Scientific definitions for homologies
homology
[ hə-mŏl′ə-jē ]
A homologous relationship or correspondence.
The relation of the chemical elements of a periodic family or group.
The relation of the organic compounds forming a homologous series.
A topological classification of configurations into distinct types that imposes an algebraic structure or hierarchy on families of geometric figures.