autoplastn.
/ˈɔːtə(ʊ)plast/, U.S. /ˈɔdəˌplæst/, /ˈɔdoʊˌplæst/, /ˈɑdəˌplæst/, /ˈɑdoʊˌplæst/ Now disused.
1. Embryology. E. R. Lankester's name for: an early embryonic cell or nucleus believed to arise independently rather than by cleavage.
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > germ cell or mass > autogenous cell
autoplast1874
1874 E. R. Lankester in Proc. Royal Soc. 22 232 The occurrence of independently formed corpuscles (the autoplasts) which take part in the formation of the blastoderm.
1875 E. R. Lankester in Q. Jrnl. Microsc. Sci. 15 40 These nucleus-like bodies can be observed in all their stages of development in living eggs, and I have satisfied myself that they commence as minute points, gradually increasing in size like other free-formed nuclei. I distinguish them as ‘autoplasts’.
1888 Stud. Biol. Lab. (Johns Hopkins Univ.) 4 175 The surface of the yolk below the blastoderm..is covered by a number of large, well-defined, nucleus-like bodies, the autoplasts of Lankester.
1910 in Proc. Royal Physical Soc. Edinb. 1909–12 (1912) 18 106 While these ‘autoplasts’ (Lankester) are yet in the act of forming the yolk epithelium, a thickening of the periphery of the blastoderm takes place.
2. Botany. A chloroplast.
ΘΚΠ
the world > plants > part of plant > cell or aggregate tissue > [noun] > cell > parts of cell > other parts
disc1835
crystalloid1863
autoplast1884
plastid1885
granum1894
primary endosperm nucleus1897
chromoplast1902
phragmoplast1904
plasmodesma1905
phragmosome1940
1884 Q. Jrnl. Microsc. Sci. 24 243 When the Trophoplast (plastid) develops as a typical Autoplast (Chloroplastid), the skeleton is bulky and includes large quantities of chlorophyll.
1894 Pharmaceut. Jrnl. & Trans. 12 May 947/2 The chromatophores are distinguishable as ‘chloroplastids’, ‘autoplasts’, or ‘chloroleucites’, when they contain the green colouring matter chlorophyll.
1926 Amer. Jrnl. Bot. 13 304 A. Meyer held that the plastids (trophoplasts) can develop into three different types of mature plastids: autoplasts (chloroplasts), anaplasts (leucoplasts), and chromoplasts.
This entry has been updated (OED Third Edition, June 2011; most recently modified version published online December 2021).
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n.1874