单词 | pseudonavicella |
释义 | pseudonavicellan. Zoology. Now rare. In certain gregarines: an elliptical oocyst (‘spore’) with pointed ends, containing sporozoites. ΚΠ 1867 J. Hogg Microscope (ed. 6) ii. ii. 367 The Gregarinida..multiply by..dividing into a multitude of minute objects, called pseudo-navicellæ, from their resemblance in shape to the ship-like diatoms (naviculæ). 1877 T. H. Huxley Man. Anat. Invertebrated Animals ii. 94 The embryos of Gregarina gigantea, when they leave their pseudo-navicellæ, are minute masses of protoplasm similar to Protamœbæ. 1913 Philos. Trans. (Royal Soc.) B. 203 42 The zygotes..give rise to the sporoblasts, and each of these divides to form the eight sporozoites of the pseudonavicellæ. 1972 Trans. Amer. Philos. Soc. 62 203/2 Cysts containing pseudonavicella spores, nematode eggs, [etc.]..were found in coagulum discharged through the more anterior dorsal pores. Derivatives ˌpseudonaviˈcellar adj. rare Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Pseudonavicellar, pertaining to a pseudonavicella, or having its character, as the spores of Sporozoa. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.1867 |
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