Definition of diatom in English:

diatom

Syllabification: di·a·tom
Pronunciation: /ˈdīəˌtäm
 
/

noun

Biology
A single-celled alga that 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)
More example sentences
  • 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.
  • 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.
  • Algae, diatoms, dinoflagellates, and photosynthetic bacteria all belong to this group of organisms.

Origin

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

Derivatives

diatomaceous

Pronunciation: /ˌdīətəˈmāSHəs/
adjective
More example sentences
  • 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.
  • Massive, bioturbated terrigenous silty clay and diatomaceous mud dominate sedimentation in the distal ice-shelf environment.
  • ‘The bottom appeared light and clear, a waste of firm diatomaceous [algae-skeleton] ooze,’ said Piccard.

Definition of diatom in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day meretricious
Pronunciation: merəˈtriSHəs
adjective
apparently attractive but having in reality no value...