| 释义 |
polystome, a. and n.|ˈpɒlɪstəʊm|
[a. F. polystome (1813 in Littré), ad. Gr. πολύστοµ-ος many-mouthed, f. πολυ-, poly- + στόµα mouth.]
a. adj. Having many mouths.
b. n. An animal having many mouths or suckers, as a sponge, an acinetiform infusorian, or a parasitic trematode worm or fluke of the genus Polystomum or suborder Polystomea (polystome-fluke). So poˈlystomous a. [f. Gr. as above + -ous], many-mouthed, polystomatous; ‖ polyˈstomium (pl. -ia) [mod.L.], each of the fine pores which represent the original mouth in certain medusæ.
1859J. R. Greene Man. Anim. Kingd., Protozoa 77 ‘Acineta Forms’..rather constitute a distinct group of Infusoria, to which the term ‘*polystome’ might, without objection, be perhaps applied. For each of the radiating filaments..with which the Acinetæ are provided is, in truth, a retractile tube, susceptible of elongation to a remarkable extent, and furnished at its extremity with an adherent disk.
1848E. Forbes Naked-eyed Medusæ 79 Included in the *Polystomous section.
1878Bell Gegenbauer's Comp. Anat. 116 Branched canals, which open at the ends of the ramifications of the arms by numerous fine pores (*polystomia). |