[ kwod-ruh t ]
/ ˈkwɒd rət /


Printing. quad2(def 1).
Ecology. a square or rectangular plot of land marked off for the study of plants and animals.

Nearby words

  1. quadraphonic,
  2. quadraphonics,
  3. quadraphony,
  4. quadraplegic,
  5. quadrasonic,
  6. quadrate,
  7. quadrate foramen,
  8. quadrate lobe,
  9. quadrate muscle of loins,
  10. quadrate muscle of sole

Origin of quadrat

First recorded in 1675–85; variant of quadrate

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for quadrat

British Dictionary definitions for quadrat


/ (ˈkwɒdrət) /


ecology an area of vegetation, often one square metre, marked out for study of the plants in the surrounding area
the frame used to mark out such an area

Word Origin for quadrat

C14 (meaning "a square"): variant of quadrate

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for quadrat



"a blank, low-cast type used by typographers to fill in larger spaces in printed lines," 1680s, from French quadrat "a quadrat," literally "a square," from Latin quadratrus, past participle of quadrare "to square, make square" (see quadrant). Earlier in English it meant a type of surveying instrument (c.1400).

Online Etymology Dictionary, © 2010 Douglas Harper