| 释义 |
‖ Mesozoa, n. pl. Zool.|mɛsəʊˈzəʊə|
[mod.L., f. Gr. µέσο-ς middle + ζῷα pl. of ζῷον animal.]
Van Beneden's name for forms intermediate in structure between the Protozoa and the Metazoa. (The Orthonectids and Dicyemids, which he placed in this division, are now recognized as Metazoa, but it is believed that true Mesozoa exist.) Also sing. mesoˈzoon, one of the mesozoa.
1877Q. Jrnl. Microsc. Sci. XVII. 144 The ‘Mesozoa’..may be characterized as multicellular organisms, composed of two kinds of cells, one layer of which..is a true ectoderm; whilst the second layer..constitutes the endoderm. 1877Huxley Anat. Inv. Anim. 676 The representatives of a distinct division, the Mesozoa, intermediate between the Protozoa and the Metazoa. 1892Ann. & Mag. Nat. Hist. Ser. vi. IX. 79 The Mesozoon Salinella. |