Definition of Submirsible

Able to be submerged.
(UK): A small nonmilitary, non-nuclear submarine for exploration.
(UK): A retroactive term used for non-nuclear submarines; nuclear submarines are termed "true submarines".
(UK): A term used primarily by some navies for nuclear submarines, termed "true submersibles", because they cannot retroactively declare that their non-nuclear submarines should be called by a different name.
(US): A very small "baby" submarine designed for specific localized missions, usually while tethered to a submarine or ship for life support and communications. Slang synonyms: midget-submarine, anchor.

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