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单词 homogen
释义

homogenn.

/ˈhɒmədʒɛn/
Etymology: < homo- comb. form + -gen comb. form.
1. Botany. (See quot. 1866) Obsolete.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > plant having seed > [noun] > monocot, dicot, or polycotyleden
dicotyledon1727
monocotyledon1727
polycotyledon1828
dictyogen1841
monocot1854
homogen1866
dicot1877
monocotyl1877
1866 J. Lindley & T. Moore Treasury Bot. Homogens, a name given by Lindley to a division of Exogens characterised by the wood being arranged in the form of wedges, and not in concentric circles.
2.
a. Biology. A part or organ homogenetic with another: see homogenetic adj. 1.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > heredity or hereditary descent > [noun] > correspondence in structure
homology1835
homogen1870
homogeny1870
homoplasy1870
homoplasmy1874
homotypy1874
parhomology1888
1870 E. R. Lankester in Ann. Nat. Hist. 6 43 The hœmochyle or blood-lymph system of Vertebrates has no homogen, or but a very rudimentary one, in the other groups of animals.
1875 Contemp. Rev. 26 946.
b. A race of organized beings descended from a common ancestor.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > heredity or hereditary descent > [noun] > descent from common ancestor > group having
parentela1881
homogen1888
sibship1906
clade1957
cladistic1965
1888 Pop. Sci. Monthly Dec. 179 We can consider the different men as forming a relative homogen—a species, as M. de Quatrefages contends.
This entry has not yet been fully updated (first published 1899; most recently modified version published online September 2021).
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n.1866
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更新时间:2024/12/25 2:26:15