nyctitropicadj.

Brit.

/ˌnɪktᵻˈtrɒpɪk/,

/ˌnɪktᵻˈtrəʊpɪk/, U.S.

/ˌnɪktəˈtrɑpɪk/

Origin: Formed within English, by compounding. Etymons: nycti- comb. form, -tropic comb. form.

Etymology: < nycti- comb. form + -tropic comb. form. Compare nyctitropism n., and slightly later nyctotropic adj. at nycto- comb. form . N.E.D. (1907) gives only the pronunciation (niktitrǫ·pik) /nɪktɪˈtrɒpɪk/.

Botany.

= nyctinastic adj.See note s.v. nyctitropism n.

ΘΚΠ

the world > plants > part of plant > growth, movement, or curvature of parts > [adjective] > undergoing tropism

geotropic1875

heliotropic1875

paratonic1875

apheliotropic1880

apogeotropic1880

nyctitropic1880

paraheliotropic1880

plagiotropic1882

phototropic1883

selenotropic1883

rheotropic1884

orthotropic1885

thermotropic1885

haptotropic1888

traumatropic1898

plagiotropous1900

aphototropic1903

orthotropous1909

1880 C. Darwin & F. Darwin Power of Movement in Plants 281 Nyctitropism and nyctitropic, i.e. night-turning, may be applied both to leaves and flowers,..but it would be best to confine the term to leaves.

1880 C. Darwin & F. Darwin Power of Movement in Plants 298 No movement deserves to be called nyctitropic, unless it has been acquired for the sake of lessening radiation.

1885 G. L. Goodale in A. Gray & G. L. Goodale Bot. Text-bk. (ed. 6) II. ii. xiii. 411 When leaves which naturally assume nyctitropic positions are pinned.., serious injuries result.

1904 Bot. Gaz. 38 465 The nyctitropic movements of the tamarind leaf are carefully described [by Theophrastus].

1969 Amer. Midland Naturalist 81 63 Larrea leaflets exhibit nyctitropic movement which also occurs in daytime during general stress.

1988 Ecology 69 1578/1 Nyctitropic leaves respond to darkness, and heliotropic movements are determined by the direction of light.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	nyctitropic
释义	nyctitropicadj. Brit. /ˌnɪktᵻˈtrɒpɪk/, /ˌnɪktᵻˈtrəʊpɪk/, U.S. /ˌnɪktəˈtrɑpɪk/ Origin: Formed within English, by compounding. Etymons: nycti- comb. form, -tropic comb. form. Etymology: < nycti- comb. form + -tropic comb. form. Compare nyctitropism n., and slightly later nyctotropic adj. at nycto- comb. form . N.E.D. (1907) gives only the pronunciation (niktitrǫ·pik) /nɪktɪˈtrɒpɪk/. Botany. = nyctinastic adj.See note s.v. nyctitropism n. ΘΚΠ the world > plants > part of plant > growth, movement, or curvature of parts > [adjective] > undergoing tropism geotropic1875 heliotropic1875 paratonic1875 apheliotropic1880 apogeotropic1880 nyctitropic1880 paraheliotropic1880 plagiotropic1882 phototropic1883 selenotropic1883 rheotropic1884 orthotropic1885 thermotropic1885 haptotropic1888 traumatropic1898 plagiotropous1900 aphototropic1903 orthotropous1909 1880 C. Darwin & F. Darwin Power of Movement in Plants 281 Nyctitropism and nyctitropic, i.e. night-turning, may be applied both to leaves and flowers,..but it would be best to confine the term to leaves. 1880 C. Darwin & F. Darwin Power of Movement in Plants 298 No movement deserves to be called nyctitropic, unless it has been acquired for the sake of lessening radiation. 1885 G. L. Goodale in A. Gray & G. L. Goodale Bot. Text-bk. (ed. 6) II. ii. xiii. 411 When leaves which naturally assume nyctitropic positions are pinned.., serious injuries result. 1904 Bot. Gaz. 38 465 The nyctitropic movements of the tamarind leaf are carefully described [by Theophrastus]. 1969 Amer. Midland Naturalist 81 63 Larrea leaflets exhibit nyctitropic movement which also occurs in daytime during general stress. 1988 Ecology 69 1578/1 Nyctitropic leaves respond to darkness, and heliotropic movements are determined by the direction of light. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < adj.1880
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