| 单词 | hydrilla |
| 释义 | hydrilla /huy dril"euh/, n. a submerged aquatic plant, Hydrilla verticillata, native to the Old World, that has become a pest weed in U.S. lakes and waterways. [ < NL (1814), the genus name, equiv. to L hydr(a) HYDRA + -illa dim. suffix] |
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