Definition of quadrat in English:

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Pronunciation: /ˈkwädrat/
Pronunciation: /ˈkwädrət/


1Each of a number of a small areas of habitat, typically of one square meter, selected at random to act as samples for assessing the local distribution of plants or animals.
Example sentences
  • For every nightly census, a minimum of three and a maximum of 21 quadrats were sampled.
  • A total of 199 quadrats were sampled in closed canopy areas.
  • Territory quadrats were the vegetation quadrats sampled at the center of each of 88 territories.
1.1A portable frame, typically with an internal grid, used to mark out a quadrat.
Example sentences
  • A plastic grid with 25 small quadrats (each corresponding to 4% of the total cover) was used.
  • Canopy cover was dominated by Quercus macrocarpa with a relative frequency of 63% of quadrats with a wooded canopy.
  • Percent cover of each species in the herb stratum was estimated visually using a portable 1 X 1 m quadrat with 1 dm graduations.


Early 20th century: variant of quadrate.

For editors and proofreaders

Syllabification: quad·rat

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