Old delta Synonyms

Definitions for Old

(adjective) being of advanced years and especially past middle age
(adjective) dating or surviving from the distant past
(adjective) having been such at some previous time

OD abbreviation

OD is an abbreviation for Old Delta

What does OD stand for?

OD stands for "Old Delta"

Delta replaced

Definitions for Delta

(noun) the 4th letter of the Greek alphabet
(noun) a low triangular area of alluvial deposits where a river divides before entering a larger body of water
(noun) an object shaped like an equilateral triangle