perfoliationn.

Brit.

/pəˌfəʊlɪˈeɪʃn/, U.S.

/pərˌfoʊlɪˈeɪʃ(ə)n/

Origin: Formed within English, by derivation. Etymons: perfoliate adj., -ion suffix¹.

Etymology: < perfoliate adj. + -ion suffix¹; compare -ation suffix. Compare earlier perfoliated adj.

Botany. Now rare.

The condition of being perfoliate.

ΘΚΠ

the world > plants > part of plant > leaf > [noun] > with particular position or connection with stem

interfoil1672

perfoliation1855

interleaf1869

underleaf1873

1855 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Involutivus, applied by Candolle..to perfoliation where the two bodies of a leaf contained in the bud roll themselves from without inwards.

1875 Bull. Torrey Bot. Club. 6 68 Siphium perfoliatum, six feet high, stem an inch in diameter and square, cup at perfoliation holding more than a gill.

1880 A. Gray Struct. Bot. iii. §4 107 Uvularia perfoliata..reveals the explanation of the perfoliation: the base of the lower leaves conspicuously surrounds and encloses the stem.

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

单词	perfoliation
释义	perfoliationn. Brit. /pəˌfəʊlɪˈeɪʃn/, U.S. /pərˌfoʊlɪˈeɪʃ(ə)n/ Origin: Formed within English, by derivation. Etymons: perfoliate adj., -ion suffix¹. Etymology: < perfoliate adj. + -ion suffix¹; compare -ation suffix. Compare earlier perfoliated adj. Botany. Now rare. The condition of being perfoliate. ΘΚΠ the world > plants > part of plant > leaf > [noun] > with particular position or connection with stem interfoil1672 perfoliation1855 interleaf1869 underleaf1873 1855 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Involutivus, applied by Candolle..to perfoliation where the two bodies of a leaf contained in the bud roll themselves from without inwards. 1875 Bull. Torrey Bot. Club. 6 68 Siphium perfoliatum, six feet high, stem an inch in diameter and square, cup at perfoliation holding more than a gill. 1880 A. Gray Struct. Bot. iii. §4 107 Uvularia perfoliata..reveals the explanation of the perfoliation: the base of the lower leaves conspicuously surrounds and encloses the stem. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < n.1855
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