isomerousadj.

/ʌɪˈsɒmərəs/

Etymology: < iso- comb. form + -merous comb. form. Compare isomeric adj., and Hellenistic Greek ἰσομερής.

1. Botany. Of a flower: Having the same number of parts in each whorl. (Said also of the whorls.) Opposed to heteromerous adj. 2b.

ΘΚΠ

the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having specific arrangement or number of member parts

regular1760

decandrous1808

irregular1826

tetramerous1835

pentamerous1848

symmetrical1849

hexamerous1857

isomerous1857

octamerous1857

anisomerous1861

octomeral1871

hemicyclic1875

zygomorphic1875

zygomorphous1879

tetracyclic1880

heteromerous1882

heterocyclic1895

oligomerous1897

pleiomerous1898

decasepalous-

1857 A. Henfrey Elem. Course Bot. §153 When the organs are equal in all the circles, the flowers are isomerous.

1857 A. Henfrey Elem. Course Bot. §153 The stamens are mostly isomerous, with either one, two, or more whorls, when the floral envelopes are regular.

1882 S. H. Vines tr. J. von Sachs Text-bk. Bot. (ed. 2) 601 When the number of members is the same in each whorl [of a flower] they are said to be isomerous, when this is not the case heteromerous.

2. Anatomy and Zoology. Having the same number of parts or segments, as in the limbs; spec. belonging to the division Isomera of coleopterous insects, in which the number of tarsal joints is the same in all the legs: opposed to heteromerous adj. 1. Applied also to molar teeth having the same number of ridges, as in existent elephants.

ΘΚΠ

the world > life > the body > part of body > [adjective] > having same number of

isomerous1878

1878 R. T. H. Bartley tr. P. Topinard Anthropol. ii. 74 In reptiles the two extremities are..symmetrical; and.. isomerous, flexion being exerted in the same direction.

3. Chemistry. = isomeric adj.

ΘΚΠ

the world > matter > chemistry > isomerism > [adjective] > isomeric

isomeric1838

isomerous1864

1864 Webster's Amer. Dict. Eng. Lang. Isomorphism, A similarity of crystalline form; as, (a) Between substances of like composition or atomic proportions...(b) Between compounds of unlike composition or atomic proportions...The first of these is sometimes distinguished as isomerous or isonomic isomorphism; the second as heteromerous or heteronomic isomorphism. Dana.

1887 New Sydenham Soc. Lexicon Isomerous, same as Isomeric.

This entry has not yet been fully updated (first published 1900; most recently modified version published online March 2022).

单词	isomerous
释义	isomerousadj. /ʌɪˈsɒmərəs/ Etymology: < iso- comb. form + -merous comb. form. Compare isomeric adj., and Hellenistic Greek ἰσομερής. 1. Botany. Of a flower: Having the same number of parts in each whorl. (Said also of the whorls.) Opposed to heteromerous adj. 2b. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having specific arrangement or number of member parts regular1760 decandrous1808 irregular1826 tetramerous1835 pentamerous1848 symmetrical1849 hexamerous1857 isomerous1857 octamerous1857 anisomerous1861 octomeral1871 hemicyclic1875 zygomorphic1875 zygomorphous1879 tetracyclic1880 heteromerous1882 heterocyclic1895 oligomerous1897 pleiomerous1898 decasepalous- 1857 A. Henfrey Elem. Course Bot. §153 When the organs are equal in all the circles, the flowers are isomerous. 1857 A. Henfrey Elem. Course Bot. §153 The stamens are mostly isomerous, with either one, two, or more whorls, when the floral envelopes are regular. 1882 S. H. Vines tr. J. von Sachs Text-bk. Bot. (ed. 2) 601 When the number of members is the same in each whorl [of a flower] they are said to be isomerous, when this is not the case heteromerous. 2. Anatomy and Zoology. Having the same number of parts or segments, as in the limbs; spec. belonging to the division Isomera of coleopterous insects, in which the number of tarsal joints is the same in all the legs: opposed to heteromerous adj. 1. Applied also to molar teeth having the same number of ridges, as in existent elephants. ΘΚΠ the world > life > the body > part of body > [adjective] > having same number of isomerous1878 1878 R. T. H. Bartley tr. P. Topinard Anthropol. ii. 74 In reptiles the two extremities are..symmetrical; and.. isomerous, flexion being exerted in the same direction. 3. Chemistry. = isomeric adj. ΘΚΠ the world > matter > chemistry > isomerism > [adjective] > isomeric isomeric1838 isomerous1864 1864 Webster's Amer. Dict. Eng. Lang. Isomorphism, A similarity of crystalline form; as, (a) Between substances of like composition or atomic proportions...(b) Between compounds of unlike composition or atomic proportions...The first of these is sometimes distinguished as isomerous or isonomic isomorphism; the second as heteromerous or heteronomic isomorphism. Dana. 1887 New Sydenham Soc. Lexicon Isomerous, same as Isomeric. This entry has not yet been fully updated (first published 1900; most recently modified version published online March 2022). < adj.1857
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