释义 |
Definition of diatom in English: diatomnoun ˈdʌɪətəmˈdaɪəˌtɑm 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 Class Bacillariophyceae, division Chromophycota or Heterokontophyta (or phylum Bacillariophyta, kingdom Protista) Example sentencesExamples - The slime molds are now known to be a mixture of three or four unrelated groups, and the oomycetes are now classified in the Chromista, with the diatoms and brown algae.
- For example, replacement of diatoms with chlorophytes will alter cycling of silica because diatoms require silica and chlorophytes do not.
- Many are planktonic like the diatoms and Sargassum, floating free near the water surface, and being carried along by the surface currents.
- From single-celled algae called diatoms to the story of a man who plants acorns, IDFuel reminds us that inspiration for design is all around us.
- Algae, diatoms, dinoflagellates, and photosynthetic bacteria all belong to this group of organisms.
OriginMid 19th century: from modern Latin Diatoma (genus name), from Greek diatomos 'cut in two', from diatemnein 'to cut through'. Definition of diatom in US English: diatomnounˈdīəˌtämˈdaɪəˌtɑm 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 Class Bacillariophyceae, division Chromophycota or Heterokontophyta (or phylum Bacillariophyta, kingdom Protista) Example sentencesExamples - From single-celled algae called diatoms to the story of a man who plants acorns, IDFuel reminds us that inspiration for design is all around us.
- Algae, diatoms, dinoflagellates, and photosynthetic bacteria all belong to this group of organisms.
- Many are planktonic like the diatoms and Sargassum, floating free near the water surface, and being carried along by the surface currents.
- For example, replacement of diatoms with chlorophytes will alter cycling of silica because diatoms require silica and chlorophytes do not.
- The slime molds are now known to be a mixture of three or four unrelated groups, and the oomycetes are now classified in the Chromista, with the diatoms and brown algae.
OriginMid 19th century: from modern Latin Diatoma (genus name), from Greek diatomos ‘cut in two’, from diatemnein ‘to cut through’. |