† photo-epinastyn.

Forms: 1800s photepinasty, 1800s photo-epinasty.

Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: photo- comb. form, epinasty n.

Etymology: < photo- comb. form + epinasty n., after German Photoepinastie (1882 or earlier).

Botany. Obsolete. rare.

Epinasty supposed to occur as a result of exposure to bright light. Cf. photo-hyponasty n.

ΚΠ

1883 Science 9 Feb. 20/2 Detmer, by experiments on germinating plants, has become convinced that the epinastic movements of plants are wholly dependent on light; and he proposes a new term, photo-epinasty, in part place of the older one.

1883 Bull. Torrey Bot. Club 10 84 W. Detmer proposes the term ‘photepinasty’ for the epinastic position of leaves induced by light.

1896 Science 25 Sept. 430/1 The conclusion of Vines that photo-epinasty does not exist is confirmed.

Derivatives

† photo-epinastic adj. Obsolete rare

ΚΠ

1890 Bot. Gaz. 15 121 Epinasty is stimulated in the case of Helianthus annuus rather by absence of light than by its presence—thus offering a criticism upon the well-known photo-epinastic theory of Detmer.

† photo-epinastically adv. Obsolete rare Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Photo-epinastically.

This entry has been updated (OED Third Edition, March 2006; most recently modified version published online June 2021).

单词	photo-epinasty
释义	† photo-epinastyn. Forms: 1800s photepinasty, 1800s photo-epinasty. Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: photo- comb. form, epinasty n. Etymology: < photo- comb. form + epinasty n., after German Photoepinastie (1882 or earlier). Botany. Obsolete. rare. Epinasty supposed to occur as a result of exposure to bright light. Cf. photo-hyponasty n. ΚΠ 1883 Science 9 Feb. 20/2 Detmer, by experiments on germinating plants, has become convinced that the epinastic movements of plants are wholly dependent on light; and he proposes a new term, photo-epinasty, in part place of the older one. 1883 Bull. Torrey Bot. Club 10 84 W. Detmer proposes the term ‘photepinasty’ for the epinastic position of leaves induced by light. 1896 Science 25 Sept. 430/1 The conclusion of Vines that photo-epinasty does not exist is confirmed. Derivatives † photo-epinastic adj. Obsolete rare ΚΠ 1890 Bot. Gaz. 15 121 Epinasty is stimulated in the case of Helianthus annuus rather by absence of light than by its presence—thus offering a criticism upon the well-known photo-epinastic theory of Detmer. † photo-epinastically adv. Obsolete rare Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Photo-epinastically. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online June 2021). < n.1883
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