diatom
/ˈdaɪətəm/noun
1- Biology a single-celled alga which has a cell wall of silica. Many kinds are planktonic, and extensive fossil deposits have been found.【生】硅藻。
1.1
- Class Bacillariophyceae, division Chromophycota or Heterokontophyta (or phylum Bacillariophyta, kingdom Protista).硅藻纲, 杂色藻门或不等长鞭毛门（或硅藻门, 原生生物界）。
派生词
diatomaceous
adjective词源
mid 19th cent.: from modern Latin Diatoma (genus name)， from Greek diatomos 'cut in two'， from diatemnein 'to cut through'.