| 释义 |
endoderm|ˈɛndəʊdɜːm|
[f. Gr. ἔνδο-ν (see endo-) + δέρµ-α skin.]
1. Bot.
a. A layer of large cambium cells lying beneath the liber.
b. The inner layer of the wall of a vegetable cell.
1835Lindley Introd. Bot. (1848) I. 193 The cellular face of the liber..A. Richard distinguishes by the name of subliberian layer, or Endoderm.
2. Biol.
a. The inner layer of the blastoderm.
b. The lining of the internal cavity of the Cœlenterata.
c. attrib.
1861J. R. Greene Man. Anim. Kingd., Cœlent. 21 The endoderm, whose free surface forms the lining of the large internal cavity. 1862H. Spencer First Princ. ii. xix. §152 (1875) 417 The..blastoderm..divides into two layers..the ectoderm and the endoderm. 1877Huxley Anat. Inv. An. iii. 113 The endoderm..is composed of a layer of very distinct cells. 1885Encycl. Brit. XIX. 14/2 The endoderm cells..are almost wholly taken up in the chemical work of digesting and assimilating the food received into the cavity, the lining of which they form. 1914E. W. MacBride Text-bk. Embryol. I. viii. 171 The formation of a cap of small ectoderm cells resting on larger endoderm cells and gradually investing the latter by the process called epibole. 1940Chambers's Techn. Dict. 297/1 Endoderm disc, in certain Malacostraca, a posterior unpaired thickening on the ventral surface of the blastoderm during early development.
Hence endoˈdermal, endoˈdermic, adjs., pertaining to or of the nature of an endoderm; endoˈdermis [on the analogy of epidermis], Bot.
1877Huxley Anat. Inv. An. i. 57 The endodermal lining of the enterocœle. Ibid. iii. 114 The flagellæ of the endodermic cells. 1884Bower & Scott De Bary's Phaner. & Ferns 121 The endodermis is a sheath consisting in all cases of one single layer of cells. |