the deep sea (2000 meters or more) where there is no light
resembling an abyss in depth; so deep as to be unmeasurable
a locally circumscribed place characterized by some distinctive features
(anatomy) any encircling or beltlike structure
regulate housing in; of certain areas of towns
an area or region distinguished from adjacent parts by a distinctive feature or characteristic
separate or apportion into sections
any of the regions of the surface of the Earth loosely divided according to latitude or longitude
