| 释义 |
blasto-|blæstəʊ|
repr. Gr. βλαστο- stem and comb. form of βλαστός sprout, germ. Used as the first element in many technical terms, chiefly in Biology, with the sense of ‘germ’ or ‘bud.’ Thus blastoˈcarpous a. Bot. [Gr. καρπός fruit], of the nature of a seed which germinates before escaping from the pericarp. ˈblastocele |-siːl|, [κελίς spot], the germinal spot. ˈblastocheme |-kiːm|, [ὄχηµα vehicle], a Medusa in which a generative body is developed in the radiating canals. ˈblastochyle |-kaɪl|, [χῦλος juice], the clear mucilaginous fluid in the embryonal sac of the ovule of plants. ˈblastocœle |-siːl| [κοῖλος hollow], the central cavity which forms in the ovum after segmentation. blastoˈcolla, Bot., [κόλλα glue], the gummy substance which coats certain buds, as those of the horse-chestnut. ˈblastocyst |-sɪst|, blastoˈcystinx |-ˈsɪstɪŋks|, [κύστις bladder, κύστιγξ little bladder], the germinal vesicle, blastoderm. ˈblastodisc, the germinal disc of the ovum of birds. blastoˈgenesis, reproduction by buds. blaˈstogeny |-ˈɒdʒɪnɪ|, Hæckel's term for the evolution of bodily form, the ‘germ-history of persons.’ blaˈstography, the scientific description of the buds of plants. ˈblastomere |-mɪə(r)|, [Gr. µέρος part], each of the segments into which the impregnated ovum at first divides. blastomyˈcosis [mycosis], a disease caused by infection with pathogenic fungi, affecting either the skin or the organs generally. blaˈstophagine a., of or belonging to the Blastophaga, a genus of fig-insects. ˈblastophor |-əfə(r)|, [Gr. -ϕορος -bearing, -bearer], a more or less centrally placed portion of the spermatospore, which is not used up in the process of division to form spermatoblasts, but serves to carry these; hence blaˈstophoral a., as in blastophoral cell. ˈblastophore |-əfɔə(r)|, Bot., Richard's name for the part of the embryo with a large radicle which bears the bud. blaˈstophyly |ˈɒfɪlɪ|, [Gr. ϕυλή tribe], Hæckel's term for the ‘tribal history of persons.’ blaˈstoporal a., of or pertaining to the blastopore. ˈblastopore [πόρος passage], the orifice produced by the invagination of a point on the surface of a blastula, or blastosphere, to form the enteron. ˈblastosphere, a name for the impregnated ovum, when after segmentation, it has acquired a blastocœle and blastoderm. blastoˈstroma [Gr. στρῶµα a stratum, a bed], the germinal area. ˈblastostyle [στῦλος pillar], a stalk upon which gonophores or generative buds are developed in the Hydrozoa.
1877Huxley Anat. Inv. An. iv. 213 The central cavity of the body of the embryo Tænia simply represents a *blastocœle. 1883Knowledge 24 Aug. 123/2 A mass of nucleated cells..within which there is a cavity or blastocœle.
1876Encycl. Brit. (ed. 9) IV. 81 The *blastocolla, which covers the bud.
1877Huxley Anat. Inv. An. Introd. 16 Tracing the several germ layers back to the *blastomeres of the yelk. 1881Jrnl. Microsc. Soc. Jan. 147 There are two kinds of blastomeres, the larger form the lower half of the egg, the smaller ones the upper half.
1900Dorland Med. Dict. 113/1 *Blastomycosis. 1901H. T. Ricketts in Jrnl. Boston Soc. Med. Sci. V. 453 (title) A new mould-fungus as the cause of so-called blastomycosis or oïdiomycosis of the skin. 1903Brit. Jrnl. Dermatology XV. 121 A case of blastomycosis.
1921Brit. Mus. Return 133 Notes on Fig Insects, including..a new *Blastophagine Genus.
1881Encycl. Brit. XII. 557 The ciliated ‘planula’..fixes itself, probably by the *blastoporal pole. 1933Discovery Feb. 55/2 A small piece of the blastoporal lip [was]..cut out of the gastrula of a species of newt.
1880Huxley Cray-Fish iv. 409 Its external opening termed the *blastopore.
1877― Anat. Inv. An. iii. 131 In some *blastostyles..the ectoderm splits into two layers. |