submarine
- 01 A2 Elementary
n.a ship that can travel deep under the ocean for a long time.
n.a naval vessel capable of independent operation underwater, typically used for military or research purposes.
Simple“The submarine stayed under the water for three months without coming up.”
In context“Modern nuclear submarines are capable of remaining submerged for months at a time, limited only by the food supplies required for the crew.”
Synonyms - 02 B1 Intermediate
n.a long bread roll filled with meat, cheese, and vegetables.
n.a large sandwich consisting of a long crusty roll split lengthwise and filled with various meats and cheeses.
Simple“I ordered a turkey submarine with extra pickles for lunch.”
In context“The local deli is famous for its massive submarines, which are packed with imported Italian meats and a signature vinaigrette.”
- 03 B2 Upper Intermediate
adj.happening or existing beneath the surface of the sea.
adj.existing, occurring, or used under the surface of the sea.
Simple“Scientists are studying submarine volcanoes to see how they change the ocean floor.”
In context“The company specialises in the maintenance of submarine cables that provide high-speed internet across the Atlantic.”
Synonyms - 04 C1 Advanced
v.to slide forward and under something, like a seatbelt during a car crash.
v.to slide forward underneath a restraint, such as a lap belt, during a sudden deceleration or collision.
Simple“The crash test dummy started to submarine because the seatbelt was too loose.”
In context“Engineers redesigned the seat base to prevent passengers from submarining during a high-impact frontal collision.”
UsageThe verb is intransitive in this safety-testing context.
From sub- + marine.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.