paraheliotropicadj.

Brit.

/ˌparəˌhiːlɪə(ʊ)ˈtrɒpɪk/,

/ˌparəˌhiːlɪəˈtrəʊpɪk/, U.S.

/ˈˌpɛrəˌhiliəˈtrɑpɪk/

Origin: Formed within English, by derivation. Etymons: para- prefix¹, heliotropic adj.

Etymology: < para- prefix¹ + heliotropic adj. (see quot. 1880). Compare paraheliotropism n.

Botany.

Relating to or characterized by paraheliotropism; (of leaves or their movements) turning to reduce intense illumination.

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 419 The leaves of some plants when exposed to an intense and injurious amount of light direct themselves..so as to be less intensely illuminated. Such movements have sometimes been called diurnal sleep... They might be called paraheliotropic.

1905 Bot. Gaz. 40 452 By June 17 all the leaves had turned yellowish and had taken up permanently their paraheliotropic position.

1953 Compar. Lit. 5 135 The influence of gaslight or the light of arc and glowlamps on the growth of adjoining paraheliotropic trees.

2001 Contra Costa (Calif.) Times (Nexis) 24 Feb. c6 In the morning, they stand up and turn the broad surface of their leaflets to the sun (diaheliotropic), but by noon..the leaflets turn on their sides so that the edge of the leaflet faces the sun (paraheliotropic).

This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022).

单词	paraheliotropic
释义	paraheliotropicadj. Brit. /ˌparəˌhiːlɪə(ʊ)ˈtrɒpɪk/, /ˌparəˌhiːlɪəˈtrəʊpɪk/, U.S. /ˈˌpɛrəˌhiliəˈtrɑpɪk/ Origin: Formed within English, by derivation. Etymons: para- prefix¹, heliotropic adj. Etymology: < para- prefix¹ + heliotropic adj. (see quot. 1880). Compare paraheliotropism n. Botany. Relating to or characterized by paraheliotropism; (of leaves or their movements) turning to reduce intense illumination. 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 419 The leaves of some plants when exposed to an intense and injurious amount of light direct themselves..so as to be less intensely illuminated. Such movements have sometimes been called diurnal sleep... They might be called paraheliotropic. 1905 Bot. Gaz. 40 452 By June 17 all the leaves had turned yellowish and had taken up permanently their paraheliotropic position. 1953 Compar. Lit. 5 135 The influence of gaslight or the light of arc and glowlamps on the growth of adjoining paraheliotropic trees. 2001 Contra Costa (Calif.) Times (Nexis) 24 Feb. c6 In the morning, they stand up and turn the broad surface of their leaflets to the sun (diaheliotropic), but by noon..the leaflets turn on their sides so that the edge of the leaflet faces the sun (paraheliotropic). This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022). < adj.1880
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