(1) (Ecology) An area characterized by similar flora or fauna; a belt or area to which certain species are limited. (2) (Engineering) In earth dams, a segment of the earthfill containing similar materials; earth structures may be divided into two or more segments or zones to make the best use of available materials.
ZONE
Meaning of ZONE in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012