quadrat

Short definition from Wiktionary

Noun

1. 1
   An area of land, marked for studying its plants, animals, soil, natural processes, etc.
2. 2
   A quad; a blank metal block used to fill space in lines of type.
3. 3
   A virtual rectangular subdivision of a line or column of hieroglyphs within which a group of hieroglyphs is arranged.

Verb

1. 1
   To place a quadrat, or divide into quadrats.