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单词 diatom
释义

Definition of diatom in English:

diatom

noun ˈdʌɪətəmˈdaɪəˌtɑm
Biology
  • A single-celled alga which has a cell wall of silica. Many kinds are planktonic, and extensive fossil deposits have been found.

    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.

Derivatives

  • diatomaceous

  • adjective dʌɪətəˈmeɪʃəsˌdaɪədəˈmeɪʃəs
    Biology
    • Containing or relating to diatoms.

      diatomaceous sediments
      Example sentencesExamples
      • ‘The bottom appeared light and clear, a waste of firm diatomaceous [algae-skeleton] ooze,’ said Piccard.
      • Massive, bioturbated terrigenous silty clay and diatomaceous mud dominate sedimentation in the distal ice-shelf environment.
      • Although diatoms are universal in fresh and sea water, they achieve greater importance in high-latitude oceanic areas, as well as in some continental margin basins where they form diatomaceous ooze.

Origin

Mid 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:

diatom

nounˈdīəˌtämˈdaɪəˌtɑm
Biology
  • A single-celled alga which has a cell wall of silica. Many kinds are planktonic, and extensive fossil deposits have been found.

    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.

Origin

Mid 19th century: from modern Latin Diatoma (genus name), from Greek diatomos ‘cut in two’, from diatemnein ‘to cut through’.

 
 
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更新时间:2024/12/23 20:51:18