Standby duty Synonyms

Standby replaced

secondary duty

Definitions for Standby

(noun) something or someone to which one looks for support
(noun) something that can be relied on when needed
(noun) an actor able to replace a regular performer when required

SD abbreviation

SD is an abbreviation for Standby Duty

What does SD stand for?

SD stands for "Standby Duty"

Definitions for Duty

(noun) a charge usually of money collected by the government from people or businesses for public use
(noun) a piece of work that needs to be done regularly
(noun) something one must do because of prior agreement