| 单词 | planarian |
| 释义 | planarian /pleuh nair"ee euhn/, n. Zool. any of various free-swimming, mostly freshwater flatworms of the class Turbellaria, having an undulating or sluglike motion: popular in laboratory studies for the ability to regenerate lost parts. [1885-60; < NL Planari(a) a flatworm genus (n. use of fem. of LL planarius level, on level ground; taken to mean "flat"; see PLANE1, -ARY + -AN] |
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