gemman.

Brit.

/ˈdʒɛmə/, U.S.

/ˈdʒɛmə/

Forms: Plural gemmæ.

Etymology: Latin: see gem n.¹

†1. (See quot. 1692) Obsolete. rare.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > ovum or ootid > yolk > tread

strainc1305

cock treading1573

kenning1585

tread1593

cock's tread1647

gallature1650

treadle1658

cicatricula1664

strind1671

gemma1692

chalaza1704

segmentation cavity1888

1692 J. Ray Wisdom of God (ed. 2) ii. 68 The Gemma or Cicatricula of the Egg contain'd in the female Ovary.

2. Botany.

a. A leaf-bud as distinguished from a flower-bud.

ΘΚΠ

the world > plants > part of plant > bud > [noun] > leaf-bud

gem1382

leaf bud1658

oculus1728

gemma1770

1770 C. Milne Bot. Dict. (at cited word) Mr. Ray was the first who gave the name of Gemma to the bud, which had formerly been denominated germen.

1826 W. Kirby & W. Spence Introd. Entomol. (1828) III. xxix. 60 A state analogous to that of the larva in the insect begins in the plant when it..is evolved from the gemma.

1844 W. B. Carpenter Animal Physiol. xv. 545 The bodies of the first class are known as leaf-buds in the Flowering Plants, and as gemmæ among the Cryptogamia.

1880 A. Gray Struct. Bot. 413/1.

b. In mosses, liverworts, etc.: a small cellular body which becomes detached from the mother-plant and originates a new one.

ΘΚΠ

the world > plants > particular plants > moss > [noun] > parts of

moutha1398

fimbria1752

calyptra1753

veil1760

lid1776

apophysis1785

operculum1788

peristoma1792

peristome1799

peristomium1806

hair-point1818

vaginula1818

perigynium1821

vaginule1821

gemma1830

paraphyllium1832

tympanum1832

perigon1857

pseudopodium1861

commissure1863

ocrea1863

cap1864

chaeta1866

struma1866

membranulet1891

pyxis1900

pseudopod1914

annulus-

1830 J. Lindley Introd. Nat. Syst. Bot. 325 In Jungermannia there is a third kind of reproductive matter, consisting of heaped clusters of little amorphous bodies, growing from the surface of the leaves, and called gemmæ.

1857 A. Henfrey Elem. Course Bot. §324 The Hepaticae produce cellular bulbels or gemmae.

1867 J. Hogg Microscope (ed. 6) ii. i. 308 These plants are produced by spores and minute cellular nodules called gemmae or buds.

3. Zoology. A bud-like growth upon animals of low organization, which becomes detached and develops into a new individual.

ΘΚΠ

the world > animals > invertebrates > bodies or parts > [noun] > bud generating individual

gem1832

bud1836

gemmule1844

gemma1851

1851 T. Wright & G. F. Richardson Introd. Geol. (new ed.) viii. 213 Small gemmæ, covered with cilia, which are free organisms during the first period of their existence.

1855 T. R. Jones Gen. Outl. Animal Kingdom (ed. 2) iii. 56 The Alcyons..are reproduced..by gemmæ, which..are developed around the pre-existent polyps.

Compounds

gemma grass n. U.S. (see gamagrass n.).

ΚΠ

1890 A. C. Gunter Miss Nobody (1891) iv. 47 The mesa is bare of everything for five hundred yards but gemma grasses.

This entry has not yet been fully updated (first published 1898; most recently modified version published online March 2022).

单词	gemma
释义	gemman. Brit. /ˈdʒɛmə/, U.S. /ˈdʒɛmə/ Forms: Plural gemmæ. Etymology: Latin: see gem n.¹ †1. (See quot. 1692) Obsolete. rare. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > ovum or ootid > yolk > tread strainc1305 cock treading1573 kenning1585 tread1593 cock's tread1647 gallature1650 treadle1658 cicatricula1664 strind1671 gemma1692 chalaza1704 segmentation cavity1888 1692 J. Ray Wisdom of God (ed. 2) ii. 68 The Gemma or Cicatricula of the Egg contain'd in the female Ovary. 2. Botany. a. A leaf-bud as distinguished from a flower-bud. ΘΚΠ the world > plants > part of plant > bud > [noun] > leaf-bud gem1382 leaf bud1658 oculus1728 gemma1770 1770 C. Milne Bot. Dict. (at cited word) Mr. Ray was the first who gave the name of Gemma to the bud, which had formerly been denominated germen. 1826 W. Kirby & W. Spence Introd. Entomol. (1828) III. xxix. 60 A state analogous to that of the larva in the insect begins in the plant when it..is evolved from the gemma. 1844 W. B. Carpenter Animal Physiol. xv. 545 The bodies of the first class are known as leaf-buds in the Flowering Plants, and as gemmæ among the Cryptogamia. 1880 A. Gray Struct. Bot. 413/1. b. In mosses, liverworts, etc.: a small cellular body which becomes detached from the mother-plant and originates a new one. ΘΚΠ the world > plants > particular plants > moss > [noun] > parts of moutha1398 fimbria1752 calyptra1753 veil1760 lid1776 apophysis1785 operculum1788 peristoma1792 peristome1799 peristomium1806 hair-point1818 vaginula1818 perigynium1821 vaginule1821 gemma1830 paraphyllium1832 tympanum1832 perigon1857 pseudopodium1861 commissure1863 ocrea1863 cap1864 chaeta1866 struma1866 membranulet1891 pyxis1900 pseudopod1914 annulus- 1830 J. Lindley Introd. Nat. Syst. Bot. 325 In Jungermannia there is a third kind of reproductive matter, consisting of heaped clusters of little amorphous bodies, growing from the surface of the leaves, and called gemmæ. 1857 A. Henfrey Elem. Course Bot. §324 The Hepaticae produce cellular bulbels or gemmae. 1867 J. Hogg Microscope (ed. 6) ii. i. 308 These plants are produced by spores and minute cellular nodules called gemmae or buds. 3. Zoology. A bud-like growth upon animals of low organization, which becomes detached and develops into a new individual. ΘΚΠ the world > animals > invertebrates > bodies or parts > [noun] > bud generating individual gem1832 bud1836 gemmule1844 gemma1851 1851 T. Wright & G. F. Richardson Introd. Geol. (new ed.) viii. 213 Small gemmæ, covered with cilia, which are free organisms during the first period of their existence. 1855 T. R. Jones Gen. Outl. Animal Kingdom (ed. 2) iii. 56 The Alcyons..are reproduced..by gemmæ, which..are developed around the pre-existent polyps. Compounds gemma grass n. U.S. (see gamagrass n.). ΚΠ 1890 A. C. Gunter Miss Nobody (1891) iv. 47 The mesa is bare of everything for five hundred yards but gemma grasses. This entry has not yet been fully updated (first published 1898; most recently modified version published online March 2022). < n.1692
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