peritropousadj.

Brit.

/pᵻˈrɪtrəpəs/, U.S.

/pəˈrɪtrəpəs/

Origin: A borrowing from French, combined with an English element. Etymons: French péritrope , -ous suffix.

Etymology: < French péritrope (see peritropal adj.) + -ous suffix. Compare earlier peritropal adj. Compare also antitropous adj., homotropous adj., orthotropous adj., etc.

Botany. rare.

Of a seed or embryo: attached by a central hilum; (also) having its axis perpendicular to that of the fruit; lying horizontally.

ΘΚΠ

the world > plants > part of plant > reproductive part(s) > seed > [adjective] > of parts > relating to embryo or radicle

rostellate1800

orthotropous1819

peritropal1819

radicular1819

rostelliform1819

homotropous1829

heterotropous1830

heterotropal1832

axile1839

amphitropous1841

homotropal1844

rostellara1845

amphitropal1847

peritropous1849

polyembryonate1864

polyembryonic1864

proembryonic1875

1849 J. H. Balfour Man. Bot. 229 At other times the hilum or true organic base [of the ovule] appears to be in the middle, and the ovule becomes horizontal, peltate.., or peritropous.

1880 A. Gray Struct. Bot. viii. 313 Centrifugal (or peritropous), when [the radicle is] turned toward the sides.

1931 Ann. Missouri Bot. Garden 18 137 Ovule one in each carpel, peritropous-ascending, the micropyle inferior.

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

单词	peritropous
释义	peritropousadj. Brit. /pᵻˈrɪtrəpəs/, U.S. /pəˈrɪtrəpəs/ Origin: A borrowing from French, combined with an English element. Etymons: French péritrope , -ous suffix. Etymology: < French péritrope (see peritropal adj.) + -ous suffix. Compare earlier peritropal adj. Compare also antitropous adj., homotropous adj., orthotropous adj., etc. Botany. rare. Of a seed or embryo: attached by a central hilum; (also) having its axis perpendicular to that of the fruit; lying horizontally. ΘΚΠ the world > plants > part of plant > reproductive part(s) > seed > [adjective] > of parts > relating to embryo or radicle rostellate1800 orthotropous1819 peritropal1819 radicular1819 rostelliform1819 homotropous1829 heterotropous1830 heterotropal1832 axile1839 amphitropous1841 homotropal1844 rostellara1845 amphitropal1847 peritropous1849 polyembryonate1864 polyembryonic1864 proembryonic1875 1849 J. H. Balfour Man. Bot. 229 At other times the hilum or true organic base [of the ovule] appears to be in the middle, and the ovule becomes horizontal, peltate.., or peritropous. 1880 A. Gray Struct. Bot. viii. 313 Centrifugal (or peritropous), when [the radicle is] turned toward the sides. 1931 Ann. Missouri Bot. Garden 18 137 Ovule one in each carpel, peritropous-ascending, the micropyle inferior. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < adj.1849
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