SAC
- 01 B2 Upper Intermediate
n.a small bag or pouch inside a plant or animal that usually holds liquid.
n.a bag-like structure or pouch within an organism, typically containing fluid or air.
Simple“The spider carries its eggs in a silk sac to keep them safe.”
In context“The surgeon carefully removed the fluid-filled sac to prevent further inflammation in the surrounding tissue.”
UsageIn biological contexts, it is a countable noun.
- 02 C1 Advanced
n.Stands for Strategic Air Command.
n.Abbreviation for Strategic Air Command; the former US military command responsible for nuclear strike forces.
Simple“During the Cold War, SAC was responsible for the nation's nuclear bombers.”
In context“Historical analysis of SAC operations reveals the immense logistical complexity of maintaining a constant airborne alert during the 1960s.”
- 03 C1 Advanced
n.Stands for Senior Aircraftman.
n.Abbreviation for Senior Aircraftman; a specific rank in the British Royal Air Force.
Simple“He was promoted to SAC after three years of service in the air force.”
In context“The duties of an SAC involve specialized technical support and the supervision of junior personnel within the squadron.”
- 04 B2 Upper Intermediate
n.a short name for the city of Sacramento, California.
n.An informal abbreviation for Sacramento, the capital city of California.
Simple“We are driving up to Sac this weekend to visit some friends.”
In context“Local residents often refer to the city as Sac in casual conversation, though the full name is preferred in all official correspondence.”
- 05 C2 Proficiency
v.to give something up, especially in a game or for a purpose.
v.to sacrifice a piece or an advantage, particularly in gaming or sports contexts.
Simple“I had to sac my queen to win the chess match.”
In context“The player decided to sac his strongest unit in a desperate attempt to break the opponent's defensive line.”
UsageUsually transitive, taking the object being sacrificed.