English Reference

Word

submersible

Phoneticssub·mersible

US/səbˈmɝsɪbəɫ/

UK/səbmˈɜːsəbəl/

Countable noun

Definition

n. a small boat or vehicle that can travel underwater. It is usually used for research or to explore the deep ocean.

n. a small, self-propelled vehicle capable of operating underwater. Often used for deep-sea exploration or scientific research.

Examples

“The scientists used a submersible to study the ocean floor.”

“The research team spent three days inside the submersible, collecting samples from the deep-sea vents.”

“While large submarines are designed for military or long-range transport, a submersible is typically a smaller, more maneuverable craft intended for specialized underwater observation and data collection.”

Examples

simple

“The scientists used a submersible to study the ocean floor.”

contextual

“The research team spent three days inside the submersible, collecting samples from the deep-sea vents.”

complex

“While large submarines are designed for military or long-range transport, a submersible is typically a smaller, more maneuverable craft intended for specialized underwater observation and data collection.”

Real-World Examples

“Smugglers would put up to a dozen people on a rubber raft, cover them with a tarp, and cross the Rio Grande while using submersible motors to propel it forward.”
MIT Technology Review 21 Sept 2026
“Such ships — especially those used in research — are also known as submersibles.”
snexplores.org 27 Mar 2024
“When the scientists reviewed the photos their submersible had taken, they were amazed to find a thriving community of living creatures.”
The Guardian 12 Mar 2024
“David Bushnell developed the "Turtle" submersible as a student at Yale University.”
Smithsonian Magazine 3 Sept 2026

Etymology

From submerse + -ible.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Domain

Nautical

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Occasional
Level
B2 · Upper Intermediate
Updated

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English Reference