·add. ·- A depth of water so great that only those organisms can exist that do not assimilate.
·add. ·adj Without light. ...
Webster's Dictionary of the English Language
·noun Place; rank; station. II. Region ·noun The inhabitants of a district. III. Region ·noun The ...
Any large tract of land or water on the earth's surface, having some feature common to every part of...
The Sailor's Word-Book
·add. ·- The uppermost zone of the sea, which receives the most light. ...