Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary


noun quad·rat \ˈkwä-drət, -ˌdrat\

Definition of quadrat

  1. 1 :  2quad

  2. 2 :  a usually rectangular plot used for ecological or population studies

Origin and Etymology of quadrat

alteration of 2quadrate

First Known Use: 1683

Seen and Heard

What made you want to look up quadrat? Please tell us where you read or heard it (including the quote, if possible).