单词 | Seisonacea |
释义 | Seisonacea [´sī·sǝ`nā·shǝ] INVERTEBRATE ZOOLOGY A monofamiliar order of the class Rotifera characterized by an elongated jointed body with a small head, a long slender neck region, a thick fusiform trunk, and an elongated foot terminating in a perforated disk. |
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