Any fish of the family Gadidae, especially the Atlantic cod, Gadus morhua found in the N Atlantic and Baltic. It is brown to gray with spots, white below, and can grow to 1.5 m/5 ft.
The main cod fisheries are in the North Sea, and off the coasts of Iceland and Newfoundland, Canada. Much of the catch is salted and dried. Formerly one of the cheapest fish, decline in numbers from overfishing has made it one of the most expensive.
1. Lean white flesh of important North Atlantic food fish; usually baked or poached; SYN. codfish.
2. Major food fish of arctic and cold-temperate waters; SYN. codfish.

codex

Cash On Delivery, Collect On Delivery.
Collecting the charges upon delivery; Also called: COD, cash on delivery.

Abbreviation for chemical oxygen demand, a measure of water and effluent quality.