monomerousadj.

Brit.

/məˈnɒm(ə)rəs/, U.S.

/məˈnɑmərəs/

Origin: Formed within English, by compounding; modelled on a French lexical item. Etymons: mono- comb. form, -merous comb. form.

Etymology: < mono- comb. form + -merous comb. form, after French monomère (P. A. Latreille in Cuvier Règne animal (1817) III. 365, as noun denoting a beetle with tarsi composed of a single segment, 1840 as adjective). Compare Hellenistic Greek μονομερής (of philosophy) consisting of one part (Sextus Empiricus), (of a kind of bandage) for one side (Galen) < ancient Greek μονο- mono- comb. form + μέρος part (see mero- comb. form¹). Compare dimerous adj., trimerous adj., tetramerous adj., pentamerous adj.

†1. Entomology. Of a part of an insect: not visibly divided into segments, or consisting of only one segment. Of an insect: characterized by such segmentation. Obsolete.

ΚΠ

1826 W. Kirby & W. Spence Introd. Entomol. IV. 326 Monomerous (Monomerus). When the trunk has no suture or segment.

1826 W. Kirby & W. Spence Introd. Entomol. IV. 378 Tarsi mostly trimerous, rarely dimerous or monomerous.

1853 Sci. Amer. 11 June 312/3 The Monomerous or one-jointed tribe [of homopterous bugs] contains the cocci or scale-insects.

2. Botany. Of a part of a plant: consisting of one element. Later also (of the thallus of a coralline alga): undifferentiated.

ΚΠ

1880 A. Gray Struct. Bot. vi. §2. 176 Terms..composed of the Greek numerals prefixed to the word meaning parts or members, as Monomerous, for the case of a flower of one member of each.

1928 New Phytologist 27 175 One genus..affords the clearest example of the polymorphic condition, the ovary being obviously not monomerous, but dimerous.

1978 Ann. Missouri Bot. Garden 65 544 The genus Haematodendron is..strongly differentiated with some very primitive characters (stigma sessile, [etc.]; therefore, certainly a monomerous ovary!).

1992 Brit. Phycol. Jrnl. 27 185 Exilicrusta differs from Lithothamnion, however, in having a dimerous as opposed to a monomerous thallus.

1997 Internat. Jrnl. Plant Sci. 158 Suppl. 73/2 The tricarpellate gynoecium of Houttuynia and Anemopsis (which can also produce dimerous and monomerous gynoecia) are [sic] derived from a tetracarpellate state.

3. Zoology. Of a mammal tooth: evolved from and equivalent to a single reptile tooth. rare.

ΚΠ

1937 Philos. Trans. (Royal Soc.) B. 228 415 Its presence [sc. that of the lateral enamel strand] is irregular in marsupials where some of the teeth are dimerous mammalian teeth but others are of monomerous reptilian nature.

This entry has been updated (OED Third Edition, December 2002; most recently modified version published online March 2022).

单词	monomerous
释义	monomerousadj. Brit. /məˈnɒm(ə)rəs/, U.S. /məˈnɑmərəs/ Origin: Formed within English, by compounding; modelled on a French lexical item. Etymons: mono- comb. form, -merous comb. form. Etymology: < mono- comb. form + -merous comb. form, after French monomère (P. A. Latreille in Cuvier Règne animal (1817) III. 365, as noun denoting a beetle with tarsi composed of a single segment, 1840 as adjective). Compare Hellenistic Greek μονομερής (of philosophy) consisting of one part (Sextus Empiricus), (of a kind of bandage) for one side (Galen) < ancient Greek μονο- mono- comb. form + μέρος part (see mero- comb. form¹). Compare dimerous adj., trimerous adj., tetramerous adj., pentamerous adj. †1. Entomology. Of a part of an insect: not visibly divided into segments, or consisting of only one segment. Of an insect: characterized by such segmentation. Obsolete. ΚΠ 1826 W. Kirby & W. Spence Introd. Entomol. IV. 326 Monomerous (Monomerus). When the trunk has no suture or segment. 1826 W. Kirby & W. Spence Introd. Entomol. IV. 378 Tarsi mostly trimerous, rarely dimerous or monomerous. 1853 Sci. Amer. 11 June 312/3 The Monomerous or one-jointed tribe [of homopterous bugs] contains the cocci or scale-insects. 2. Botany. Of a part of a plant: consisting of one element. Later also (of the thallus of a coralline alga): undifferentiated. ΚΠ 1880 A. Gray Struct. Bot. vi. §2. 176 Terms..composed of the Greek numerals prefixed to the word meaning parts or members, as Monomerous, for the case of a flower of one member of each. 1928 New Phytologist 27 175 One genus..affords the clearest example of the polymorphic condition, the ovary being obviously not monomerous, but dimerous. 1978 Ann. Missouri Bot. Garden 65 544 The genus Haematodendron is..strongly differentiated with some very primitive characters (stigma sessile, [etc.]; therefore, certainly a monomerous ovary!). 1992 Brit. Phycol. Jrnl. 27 185 Exilicrusta differs from Lithothamnion, however, in having a dimerous as opposed to a monomerous thallus. 1997 Internat. Jrnl. Plant Sci. 158 Suppl. 73/2 The tricarpellate gynoecium of Houttuynia and Anemopsis (which can also produce dimerous and monomerous gynoecia) are [sic] derived from a tetracarpellate state. 3. Zoology. Of a mammal tooth: evolved from and equivalent to a single reptile tooth. rare. ΚΠ 1937 Philos. Trans. (Royal Soc.) B. 228 415 Its presence [sc. that of the lateral enamel strand] is irregular in marsupials where some of the teeth are dimerous mammalian teeth but others are of monomerous reptilian nature. This entry has been updated (OED Third Edition, December 2002; most recently modified version published online March 2022). < adj.1826
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