paraphysisn.

Brit.

/pəˈrafᵻsɪs/, U.S.

/pəˈræfəsəs/

Inflections: Plural paraphyses.

Forms: 1800s– ˈparaphyse, 1800s– paraphysis.

Origin: A borrowing from Greek, combined with an English element; modelled on a Latin lexical item. Etymons: para- prefix¹, Greek ϕύσις.

Etymology: < para- prefix¹ + ancient Greek ϕύσις growth (see physis n.), after post-classical Latin paraphysis (1794 or earlier). In sense 2 after German Paraphysis (E. Selenka 1890, in Biol. Centralbl. 10 324). Compare French paraphyse (1859 or earlier in sense 1).

1. Botany. A sterile filament or hair present among the reproductive organs in many algae, fungi, lichens, and bryophytes, and in certain ferns. Also: †a filament of the corona of a passion flower (obsolete).

ΘΚΠ

the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > parts of > cells > reproductive cell or gamete > paraphysis

paraphysis1800

paranema1866

1800 J. Hull Elements Bot. I. 69 Paraphyses,..succulent bodies accompanying the stamens and pistils, which have a jointed appearance owing to transverse partitions.

1832 J. Lindley Introd. Bot. i. ii. 122 The filiform rays of the corona of Passiflora the same author [sc. Link] calls paraphyses or parastades.

1832 J. Lindley Introd. Bot. i. iii. 201 If this theca [of a moss] be examined in its youngest state, it will be seen to form one of several small sessile ovate bodies.., enveloped in a membrane tapering upwards into a point; when abortive they are called paraphyses.

1861 R. Bentley Man. Bot. i. v. 376 Among the antheridia there are..found, slender, cellular, jointed threads..called paraphyses.

1912 Bull. Torrey Bot. Club 39 131 The young paraphyse on the right is binucleated and contains a small amount of cytoplasm.

1933 L. E. Wehmeyer Genus Diaporthe Nitschke & its Segregates vi. 229 The perithecia, when young, are filled with numerous broad, paraphysis-like hyphae.

1967 M. E. Hale Biol. Lichens ii. 27 Supporting cells of the ascogone give rise to true unbranched paraphyses with free tips.

1987 R. L. Fletcher Seaweeds Brit. Isles III. i. 32 Additional noteworthy morphological/anatomical features of brown algae include hairs, ascocysts and paraphyses.

2. Zoology. A thin-walled sac in the roof of the telencephalon of vertebrate embryos, persisting into adult life in some species.

ΘΚΠ

the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > other parts of brain

epicranium1603

buttocks of the brain1615

raphe1615

fornix1681

peduncle1707

psalterium1779

mammillary body1828

corona radiata1869

paraphysis1892

1892 C. S. Minot Human Embryol. xxvii. 690 In reptiles..there appears another evagination..in the median dorsal line, to develop the paraphysis.

1968 Brain 91 566 It could also be secondary to a dilated diencephalic pouch which overlies the paraphysis and normally is of insignificant size.

1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) xvi. 586 From this area develop the paraphysis, the anterior choroid plexus, and the pineal and parietal (parapineal) bodies.

Derivatives

† paraphysiphorous adj. Botany Obsolete rare bearing paraphyses.Apparently only attested in dictionaries or glossaries.

ΚΠ

1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Paraphysiphorus, having or bearing paraphyses..: paraphysiphorous.

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

单词	paraphysis
释义	paraphysisn. Brit. /pəˈrafᵻsɪs/, U.S. /pəˈræfəsəs/ Inflections: Plural paraphyses. Forms: 1800s– ˈparaphyse, 1800s– paraphysis. Origin: A borrowing from Greek, combined with an English element; modelled on a Latin lexical item. Etymons: para- prefix¹, Greek ϕύσις. Etymology: < para- prefix¹ + ancient Greek ϕύσις growth (see physis n.), after post-classical Latin paraphysis (1794 or earlier). In sense 2 after German Paraphysis (E. Selenka 1890, in Biol. Centralbl. 10 324). Compare French paraphyse (1859 or earlier in sense 1). 1. Botany. A sterile filament or hair present among the reproductive organs in many algae, fungi, lichens, and bryophytes, and in certain ferns. Also: †a filament of the corona of a passion flower (obsolete). ΘΚΠ the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > parts of > cells > reproductive cell or gamete > paraphysis paraphysis1800 paranema1866 1800 J. Hull Elements Bot. I. 69 Paraphyses,..succulent bodies accompanying the stamens and pistils, which have a jointed appearance owing to transverse partitions. 1832 J. Lindley Introd. Bot. i. ii. 122 The filiform rays of the corona of Passiflora the same author [sc. Link] calls paraphyses or parastades. 1832 J. Lindley Introd. Bot. i. iii. 201 If this theca [of a moss] be examined in its youngest state, it will be seen to form one of several small sessile ovate bodies.., enveloped in a membrane tapering upwards into a point; when abortive they are called paraphyses. 1861 R. Bentley Man. Bot. i. v. 376 Among the antheridia there are..found, slender, cellular, jointed threads..called paraphyses. 1912 Bull. Torrey Bot. Club 39 131 The young paraphyse on the right is binucleated and contains a small amount of cytoplasm. 1933 L. E. Wehmeyer Genus Diaporthe Nitschke & its Segregates vi. 229 The perithecia, when young, are filled with numerous broad, paraphysis-like hyphae. 1967 M. E. Hale Biol. Lichens ii. 27 Supporting cells of the ascogone give rise to true unbranched paraphyses with free tips. 1987 R. L. Fletcher Seaweeds Brit. Isles III. i. 32 Additional noteworthy morphological/anatomical features of brown algae include hairs, ascocysts and paraphyses. 2. Zoology. A thin-walled sac in the roof of the telencephalon of vertebrate embryos, persisting into adult life in some species. ΘΚΠ the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > other parts of brain epicranium1603 buttocks of the brain1615 raphe1615 fornix1681 peduncle1707 psalterium1779 mammillary body1828 corona radiata1869 paraphysis1892 1892 C. S. Minot Human Embryol. xxvii. 690 In reptiles..there appears another evagination..in the median dorsal line, to develop the paraphysis. 1968 Brain 91 566 It could also be secondary to a dilated diencephalic pouch which overlies the paraphysis and normally is of insignificant size. 1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) xvi. 586 From this area develop the paraphysis, the anterior choroid plexus, and the pineal and parietal (parapineal) bodies. Derivatives † paraphysiphorous adj. Botany Obsolete rare bearing paraphyses.Apparently only attested in dictionaries or glossaries. ΚΠ 1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Paraphysiphorus, having or bearing paraphyses..: paraphysiphorous. This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022). < n.1800
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