isologousadj.
/ʌɪˈsɒləɡəs/ Chemistry.
1.
a. Having equality or parallelism of relations: applied to two or more hydrocarbon series, of each of which the members are related to each other in the same way: see quots.
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the world > matter > chemistry > organic chemistry > [adjective] > organic compounds > isologue
isologous1857
1857 W. A. Miller Elements Chem. §1184 III. 429 The groups of which we are now speaking are isologous with the alcohols—that is to say, that the compounds which constitute each of these groups are related to each other in a manner similar to that of the components of the alcohol group with which they are compared... The allylic, the benzoic, and the cinnamic series, are isologous with that of alcohol.
1899 L. Dobbin tr. Ladenburg Hist. Chem. xi. 217 The homologous and isologous series constitute the one part of Gerhardt's classification; the other part is represented by the heterologous series.
b. Applied to each of two or more chemically similar compounds having some difference in composition other than a multiple of CH2; now usually applied spec. to compounds which have different atoms of the same valency at some position(s) in the molecule but are otherwise of identical molecular structure.
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the world > matter > chemistry > elements and compounds > [adjective] > of or relating to compounds > isologous
isologous1884
1884 Jrnl. Chem. Soc. 46 12 In the author's results differences of Br2 in isologous compounds, as allyl and dibromopropyl alcohols, correspond with differences of specific volume varying from 49·96 to 59·14.
1931 F. J. Moore Hist. Chem. (ed. 2) xiv. 163 By isologous compounds Gerhardt understood substances of analogous function like acetic and benzoic acids whose formulæ showed some other difference than CH2.
1959 Jrnl. Amer. Chem. Soc. 81 6272/1 (heading) Partition of isologous oxygen, sulfur and selenium compounds between buffers and organic solvents.
1964 Jrnl. Medicinal Chem. 7 229/1 Selenoacyl compounds undergo aminolysis much more readily than isologous thioacyl compounds.
2. Medicine and Biology. Genetically identical, esp. with respect to immunological factors; derived from another individual that is genetically identical or belongs to the same inbred strain; carried out between such individuals.
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the world > health and disease > healing > medical treatment > surgery > transplanting and grafting operations > [adjective] > between individuals of same inbred strain
isologous1955
syngeneic1961
isografted1962
isogeneic1963
isotransplanted1967
the world > life > biology > biological processes > genetic activity > heredity or hereditary descent > [adjective] > descent from common ancestor > inbreeding
homogamous1903
homogamic1907
isologous1955
1955 Jrnl. Nat. Cancer Inst. 15 1023 Lorenz, Congdon and Uphoff have increased the 30-day survival time of mice..by the injection of isologous, homologous and, in some cases, heterologous bone marrow.
1959 Folia Biologica V. 24/1 An isologous combination..fulfils the conditions for reciprocal tolerance between the host and the haematopoietic tissue graft.
1961 Lancet 29 July 262/2 An isochromosome carries, on its two symmetrical arms, duplicate gene loci each influencing the same character. These arms can be both isologous and isoallelic.
1962 Cancer Res. 22 947 Sera from mice which had been rendered resistant against the isologous transplantation of Gross virus-induced lymphomas..were found to be cytotoxic.
1962 Cancer Res. 22 947 Admixture of lymph node cells from isologous mice..inhibited the outgrowth.
1971 Nature 1 Oct. 310/2 Human antibodies..against diphtheria toxoid likewise disappear rapidly when injected into isologous human skin.
This entry has not yet been fully updated (first published 1900; most recently modified version published online December 2020).
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adj.1857