单词 | heteroblastic |
释义 | > as lemmasheteroblastic heteroblastic adj. Brit. /ˌhɛt(ə)rə(ʊ)ˈblastɪk/ , U.S. /ˌhɛdəroʊˈblæstɪk/ , /ˌhɛdərəˈblæstɪk/ [Greek βλαστός germ] Biology (a) arising from cells of a different kind; opposed to homoblastic; (b) Botany (characterized by) having a marked difference between the immature and adult forms; (c) Geology composed of grains of two or more distinct sizes; opposed to homoeoblastic.ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > types of reproduction > [adjective] > others gemmiparous1793 gemmiferous1804 agamic1816 zoogenic1842 agamogenetic1858 autogenetic1859 parthenogenetic1860 parthenogenous1869 unsexual1873 monogenous1874 monogonic1876 monogonous1876 arrenotokous1877 gemmative1877 thelytokous1877 parthenogenic1878 heteroblastic1888 blastogenic1889 isogamous1889 paedogenetic1889 monogenic1890 anisogamous1891 monogenetic1900 paedogamous1912 apomictic1913 cytogamous1918 ectogenetic1923 pseudogamous1932 agamospermous1933 impaternate1934 subsexual1937 mictic1950 somatogamous1950 zygogenetic1950 the world > the earth > structure of the earth > constituent materials > rock > texture or colour > [adjective] > texture > granular saccharine1833 saccharoid1833 saccharoidal1838 heteroblastic1888 rudaceous1903 homoeoblastic1920 the world > plants > part of plant > reproductive part(s) > seed > [adjective] > of parts > relating to embryo or radicle > of growth or development of isodynamous1835 adventive1879 heteroblastic1888 1888 H. Gadow in Nature 13 Dec. 150/2 This new cartilage is either homoblastic or heteroblastic. 1894 S. H. Vines Students' Text-bk. Bot. i. i. 14 In certain cases the embryo produced by the spore differs more or less widely from the adult form, and does not directly develope into it, but bears it as a lateral outgrowth; this mode of embryogeny is indirect or heteroblastic. 1932 A. Harker Metamorphism xiii. 202 To rocks in which the essential constituents are of two distinct orders of magnitude Becke gave the name ‘heteroblastic’, in contradistinction to ‘homoeoblastic’. 1954 R. L. Parker tr. P. Niggli Rocks & Mineral Deposits vi. 237 Crystalloblastic structures: homeoblastic, heteroblastic, porphyroblastic, with porphyroblasts or possibly crystalloid phenocrysts. 1963 P. H. Davis & V. H. Heywood Princ. Angiosperm Taxon. x. 342 Heteroblastic development results in the formation of adult and juvenile leaves. < as lemmas |
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