单词 | blastema |
释义 | blasteman. 1. Biology. The primary formative material of plants and animals; protoplasm. Now applied spec. to the initial matter or growth out of which any part is developed. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [noun] > embryo tissue blastema1849 nematoblast1885 neuroepithelium1889 scleroblastema1934 1849–52 Todd's Cycl. Anat. & Physiol. IV. i. 100/2 The structureless fluid just referred to is termed blastema. 1854 R. Owen Struct. Skeleton & Teeth in Orr's Circle Sci.: Org. Nature I. 165 The primitive basis, or ‘blastema’, of bone is a subtransparent glairy matter. 1879 tr. A. de Quatrefages de Bréau Human Species 124 Adam, who sprang from a primordial blastema called clay in the Bible. 2. Botany. The budding or sprouting part of a plant; the thallus of a lichen. ΘΚΠ the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > parts of > thallus thallus1829 proembryo1854 prothallus1854 protonema1857 prothallium1858 thallome1875 blastema1880 prothallus1921 1880 A. Gray Bot. Text-bk. (ed. 6) 399. This entry has not yet been fully updated (first published 1887; most recently modified version published online June 2022). < |
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