单词 | nematocyst |
释义 | nematocystnoun nem·a·to·cyst ˈne-mə-tə-ˌsist ni-ˈma-tə- : one of the stinging capsular organelles of the tentacle of a cnidarian (such as a box jellyfish or sea anemone) that contains a coiled, hollow, usually barbed, venomous thread which is discharged especially for catching prey and defending against enemies Each nematocyst contains a spiral-coiled thread tipped with a toxin-bearing barb that can be ejected into the skin. Peter F. Weller called also cnidocyst |
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