unisexualadj.n.

Brit.

/ˌjuːnɪˈsɛkʃʊəl/,

/ˌjuːnɪˈsɛkʃ(ᵿ)l/,

/ˌjuːnɪˈsɛksjʊ(ə)l/, U.S.

/ˌjunəˈsɛkʃ(əw)əl/

Origin: A borrowing from Latin. Etymon: Latin unisexualis.

Etymology: < post-classical Latin unisexualis (1768 or earlier) < classical Latin ūni- uni- comb. form + post-classical Latin sexualis sexual adj., after French unisexe unisex adj. Compare French unisexuel (1778 or earlier), Portuguese unissexual (1788 as †unisexual), Italian unisessuale (1804 in botany, 1825 in zoology).

A. adj.

1. Biology. Having either male or female reproductive organs, but not both, developed or present.

a. Botany. Of a flower: of only one sex, having either the stamens or pistils absent or suppressed. Also, of a plant: having separate male and female flowers; = diclinous adj.

ΘΚΠ

the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having stamens or pistils > having both stamens and pistils or hermaphrodite

perfect1706

hermaphrodite1769

unisexual1795

united1807

unisex1810

homogamous1842

teleianthous1860

1795 T. Velley Coloured Fig. Marine Plants 6 Gmelin..further observes, that in the plants now under consideration, a gradual process may be traced from those, which are unisexual, to others still more simple, and which are perfectly asexual.

1828 J. Stark Elements Nat. Hist. II. 461 The last three classes [of plants]..have the flowers thus disposed, and are hence named unisexual.

1854 S. Thomson Wanderings among Wild Flowers 62 These unisexual blossoms being either the production of the same individual plant, or of separate individuals of the same species.

1872 D. Oliver Lessons Elem. Bot. (new ed.) ii. 169 Burnet Sanguisorb,..with..unisexual flowers.

1940 T. A. Sprague in J. Huxley New Systematics 444 Other biological progressions in the Angiosperms generally accepted by taxonomists are those from the hermaphrodite flower to the unisexual one.

2005 C. Tudge Secret Life Trees vii. 148 The flowers may be of one sex or both. If they are unisexual, the tree itself may be of one sex only.

b. Zoology. Of an individual animal: producing either male or female gametes, but not both. Now rare.

ΘΚΠ

the world > animals > animal body > general parts > sexual organs and reproduction > [adjective] > unisexual

unisexual1821

1821 London Med. Repository 15 231 Phaneropneumana... Mantle free in front: unisexual: operculum distinct: shell not symmetrical.

1861 R. T. Hulme tr. C. H. Moquin-Tandon Elements Med. Zool. ii. i. 47 In a great number of animals the sexes are separated and placed on distinct individuals: these are said to be unisexual.

1960 Biol. Bull. 119 199 The number of spermatogonial divisions before synapsis can not be determined, but there is no evidence in this specimen, or in normal unisexual males, to suggest that there are not more than two.

2. Chiefly Biology. Consisting of individuals of the same sex; (of a species or population) possessing only one sex.

ΚΠ

1873 Zoologist 8 3539 I think that when we come to find out the true history of these dimorphous and, in one generation, unisexual species, we shall find that those composing the generation of females are generally larger, and perhaps structurally distinct from the bisexual brood.

1891 Cent. Dict. (at cited word) Having only female individuals.

1954 Brit. Jrnl. Preventative & Social Med. 8 178/2 A variety of more or less atypical genetic phenomena..may conceivably conspire to raise the proportion of unisexual sibships above expectation.

1974 Amer. Zool. 14 151/1 Male herds, sometimes fairly unisexual.., were found closely associated with each of the leks in the area of concentrated study.

2008 L. Anthony Snakebit v. 107 Each ecosystem contained unisexual salamander swarms dependent on at least one diploid species of Ambystoma.

3. Relating or restricted to one sex; spec. (U.S.) of a college or school.

ΘΚΠ

the world > life > sex and gender > [adjective] > restricted to or having characteristics of one sex only

sexual1815

unisexual1873

monosexual1904

sex-limited1910

unisex1917

sex-linked1932

1873 First Rep. Arkansas Industr. University 219 She sent letters of inquiry to the more distant uni-sexual colleges.

1885 L. Oliphant Sympneumata 182 The relationship of person which would maintain in a painful activity the currents of the decaying unisexual layers of either frame.

1886 Cent. Mag. June 326/1 One final provincialism of the mind there is, which a unisexual college certainly never would have any power to eradicate.

1904 Daily Chron. 14 Oct. 6 The present unjust system of unisexual punishments.

1969 L. Tiger Men in Groups viii. 202 The argument is that a unisexual school system..tends strongly in the direction of stratification rather than charisma.

1999 Edinb. Student 4 Feb. 7/1 The unisexual cliques interact. This is when you pluck up courage to talk to the fit girls/bloke at the bar.

4. = unisex adj. 3.

ΘΚΠ

the world > life > sex and gender > [adjective] > suitable for either sex or gender

mixed1644

bisexous1646

cock and hen1785

ambosexual1788

transsexual1907

heterosexual1912

unisexual1932

bi-gendered1961

gender-neutral1963

unisex1966

pangender1978

1932 V. Woolf Let. to Young Poet 24 It seems to him odd that these modern poets should write as if they had..neither soles to their feet nor palms to their hands, but only honest enterprising book-fed brains, uni-sexual bodies.

1967 N.Y. Times 17 Aug. 40/4 In a world of unisexual fashion, both men and women dare to wear whatever jewelry appeals to them, without regard to its masculinity of femininity.

1978 C. Sykes in R. Buckle U & Non-U Revisited 52 By the 1960s unisexual umbrellas were commonplace in Germany.

1982 B. Rowes in O. Davis Omni Bk. of Space 322 A $3 million, unisexual, zero-g toilet that accommodates the male and female anatomy.

2002 Sunday Times of India 22 Sept. 7/3 Vanity is unisexual.

B. n.

Botany and Zoology. An organism (or part of an organism) that is unisexual (originally in sense A. 1, later also in sense A. 2).

ΘΚΠ

the world > animals > animal body > general parts > sexual organs and reproduction > [noun] > sexual organs > unisexual organism or inflorescence

unisexual1857

1857 U.S. Democratic Rev. Nov. 477 We can distinguish hermaphrodites from unisexuals, and hybrids again from both.

1879 Pop. Sci. Monthly Dec. 171 Unisexuals in animals correspond to Diœcia in plants. In both kingdoms unisexuality is derived from bisexuality.

1895 I. K. Funk et al. Standard Dict. Eng. Lang. II. 1972/2 Unisexual, a plant or inflorescence having flowers of one sex only.

1938 S. U. Stambaugh Papava: Fruit for South Florida (new ed.) 14 Hermaphroditism is the sex type for the plant and yet only 20% of the seedlings are hermaphroditic and 80% of them are unisexuals.

1983 Oecologia 57 142/2 In oogenesis, a unisexual produces eggs containing only monacha chromosomes.

2007 J. C. Avise Evolution vi. 59 A unisexual that arose through multiple hybridization events involving unrelated females would initially appear polyphyletic.

Derivatives

uniˈsexually adv.

ΘΚΠ

the world > animals > animal body > general parts > sexual organs and reproduction > [adverb] > in a unisexual manner

unisexually1858

1858 Amer. Phrenol. Jrnl. Nov. 67/1 By pinching or freezing one side of her body, she becomes barren in respect to that side, and thenceforward produces unisexually, or males only.

1901 Nature 10 Jan. 252/1 Not that spontaneous variations are always inherited unisexually.

2009 L. J. Vitt & J. P. Caldwell Herpetology (ed. 3) 112 Some species consist entirely of females that reproduce unisexually.

This entry has been updated (OED Third Edition, September 2015; most recently modified version published online June 2022).

单词	unisexual
释义	unisexualadj.n. Brit. /ˌjuːnɪˈsɛkʃʊəl/, /ˌjuːnɪˈsɛkʃ(ᵿ)l/, /ˌjuːnɪˈsɛksjʊ(ə)l/, U.S. /ˌjunəˈsɛkʃ(əw)əl/ Origin: A borrowing from Latin. Etymon: Latin unisexualis. Etymology: < post-classical Latin unisexualis (1768 or earlier) < classical Latin ūni- uni- comb. form + post-classical Latin sexualis sexual adj., after French unisexe unisex adj. Compare French unisexuel (1778 or earlier), Portuguese unissexual (1788 as †unisexual), Italian unisessuale (1804 in botany, 1825 in zoology). A. adj. 1. Biology. Having either male or female reproductive organs, but not both, developed or present. a. Botany. Of a flower: of only one sex, having either the stamens or pistils absent or suppressed. Also, of a plant: having separate male and female flowers; = diclinous adj. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having stamens or pistils > having both stamens and pistils or hermaphrodite perfect1706 hermaphrodite1769 unisexual1795 united1807 unisex1810 homogamous1842 teleianthous1860 1795 T. Velley Coloured Fig. Marine Plants 6 Gmelin..further observes, that in the plants now under consideration, a gradual process may be traced from those, which are unisexual, to others still more simple, and which are perfectly asexual. 1828 J. Stark Elements Nat. Hist. II. 461 The last three classes [of plants]..have the flowers thus disposed, and are hence named unisexual. 1854 S. Thomson Wanderings among Wild Flowers 62 These unisexual blossoms being either the production of the same individual plant, or of separate individuals of the same species. 1872 D. Oliver Lessons Elem. Bot. (new ed.) ii. 169 Burnet Sanguisorb,..with..unisexual flowers. 1940 T. A. Sprague in J. Huxley New Systematics 444 Other biological progressions in the Angiosperms generally accepted by taxonomists are those from the hermaphrodite flower to the unisexual one. 2005 C. Tudge Secret Life Trees vii. 148 The flowers may be of one sex or both. If they are unisexual, the tree itself may be of one sex only. b. Zoology. Of an individual animal: producing either male or female gametes, but not both. Now rare. ΘΚΠ the world > animals > animal body > general parts > sexual organs and reproduction > [adjective] > unisexual unisexual1821 1821 London Med. Repository 15 231 Phaneropneumana... Mantle free in front: unisexual: operculum distinct: shell not symmetrical. 1861 R. T. Hulme tr. C. H. Moquin-Tandon Elements Med. Zool. ii. i. 47 In a great number of animals the sexes are separated and placed on distinct individuals: these are said to be unisexual. 1960 Biol. Bull. 119 199 The number of spermatogonial divisions before synapsis can not be determined, but there is no evidence in this specimen, or in normal unisexual males, to suggest that there are not more than two. 2. Chiefly Biology. Consisting of individuals of the same sex; (of a species or population) possessing only one sex. ΚΠ 1873 Zoologist 8 3539 I think that when we come to find out the true history of these dimorphous and, in one generation, unisexual species, we shall find that those composing the generation of females are generally larger, and perhaps structurally distinct from the bisexual brood. 1891 Cent. Dict. (at cited word) Having only female individuals. 1954 Brit. Jrnl. Preventative & Social Med. 8 178/2 A variety of more or less atypical genetic phenomena..may conceivably conspire to raise the proportion of unisexual sibships above expectation. 1974 Amer. Zool. 14 151/1 Male herds, sometimes fairly unisexual.., were found closely associated with each of the leks in the area of concentrated study. 2008 L. Anthony Snakebit v. 107 Each ecosystem contained unisexual salamander swarms dependent on at least one diploid species of Ambystoma. 3. Relating or restricted to one sex; spec. (U.S.) of a college or school. ΘΚΠ the world > life > sex and gender > [adjective] > restricted to or having characteristics of one sex only sexual1815 unisexual1873 monosexual1904 sex-limited1910 unisex1917 sex-linked1932 1873 First Rep. Arkansas Industr. University 219 She sent letters of inquiry to the more distant uni-sexual colleges. 1885 L. Oliphant Sympneumata 182 The relationship of person which would maintain in a painful activity the currents of the decaying unisexual layers of either frame. 1886 Cent. Mag. June 326/1 One final provincialism of the mind there is, which a unisexual college certainly never would have any power to eradicate. 1904 Daily Chron. 14 Oct. 6 The present unjust system of unisexual punishments. 1969 L. Tiger Men in Groups viii. 202 The argument is that a unisexual school system..tends strongly in the direction of stratification rather than charisma. 1999 Edinb. Student 4 Feb. 7/1 The unisexual cliques interact. This is when you pluck up courage to talk to the fit girls/bloke at the bar. 4. = unisex adj. 3. ΘΚΠ the world > life > sex and gender > [adjective] > suitable for either sex or gender mixed1644 bisexous1646 cock and hen1785 ambosexual1788 transsexual1907 heterosexual1912 unisexual1932 bi-gendered1961 gender-neutral1963 unisex1966 pangender1978 1932 V. Woolf Let. to Young Poet 24 It seems to him odd that these modern poets should write as if they had..neither soles to their feet nor palms to their hands, but only honest enterprising book-fed brains, uni-sexual bodies. 1967 N.Y. Times 17 Aug. 40/4 In a world of unisexual fashion, both men and women dare to wear whatever jewelry appeals to them, without regard to its masculinity of femininity. 1978 C. Sykes in R. Buckle U & Non-U Revisited 52 By the 1960s unisexual umbrellas were commonplace in Germany. 1982 B. Rowes in O. Davis Omni Bk. of Space 322 A $3 million, unisexual, zero-g toilet that accommodates the male and female anatomy. 2002 Sunday Times of India 22 Sept. 7/3 Vanity is unisexual. B. n. Botany and Zoology. An organism (or part of an organism) that is unisexual (originally in sense A. 1, later also in sense A. 2). ΘΚΠ the world > animals > animal body > general parts > sexual organs and reproduction > [noun] > sexual organs > unisexual organism or inflorescence unisexual1857 1857 U.S. Democratic Rev. Nov. 477 We can distinguish hermaphrodites from unisexuals, and hybrids again from both. 1879 Pop. Sci. Monthly Dec. 171 Unisexuals in animals correspond to Diœcia in plants. In both kingdoms unisexuality is derived from bisexuality. 1895 I. K. Funk et al. Standard Dict. Eng. Lang. II. 1972/2 Unisexual, a plant or inflorescence having flowers of one sex only. 1938 S. U. Stambaugh Papava: Fruit for South Florida (new ed.) 14 Hermaphroditism is the sex type for the plant and yet only 20% of the seedlings are hermaphroditic and 80% of them are unisexuals. 1983 Oecologia 57 142/2 In oogenesis, a unisexual produces eggs containing only monacha chromosomes. 2007 J. C. Avise Evolution vi. 59 A unisexual that arose through multiple hybridization events involving unrelated females would initially appear polyphyletic. Derivatives uniˈsexually adv. ΘΚΠ the world > animals > animal body > general parts > sexual organs and reproduction > [adverb] > in a unisexual manner unisexually1858 1858 Amer. Phrenol. Jrnl. Nov. 67/1 By pinching or freezing one side of her body, she becomes barren in respect to that side, and thenceforward produces unisexually, or males only. 1901 Nature 10 Jan. 252/1 Not that spontaneous variations are always inherited unisexually. 2009 L. J. Vitt & J. P. Caldwell Herpetology (ed. 3) 112 Some species consist entirely of females that reproduce unisexually. This entry has been updated (OED Third Edition, September 2015; most recently modified version published online June 2022). < adj.n.1795
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