Definition

1. Noun:
   • A portable breathing apparatus for divers: A device that allows a person to breathe underwater by supplying compressed air from tanks carried on the back. It is an acronym for "self-contained underwater breathing apparatus."

Usage

• The word "scuba" is primarily used as a noun to refer to the complete set of equipment (tank, regulator, hoses) used for diving.
• It is often used attributively (like an adjective) before other nouns to describe related activities or gear (e.g., scuba diving, scuba gear, scuba tank).

Examples

• Noun:
  • She checked her scuba before the deep dive.
  • The rental shop provided all the necessary scuba for the beginners' course.

Advanced Usage

• "Scuba" as a modifier: While "scuba" itself is a noun, it is very commonly used to modify other nouns, forming compound terms. This usage is so prevalent that it is essential for learners to recognize.
  • He is a certified scuba instructor.
  • They went on a scuba trip to the coral reef.

Variants and Related Words

• Scuba diver (n): A person who dives using scuba equipment.
• Scuba diving (n): The activity or sport of swimming underwater using scuba gear.

Synonyms

• Aqua-Lung: A trademark name often used synonymously with scuba.
• Breathing apparatus: A more general term for any device that supplies breathable air.

Notes

• The term "scuba" is an acronym that has become a standard English word. It is not typically written in all capital letters (SCUBA) in modern general usage.
• It is incorrect to use "scuba" as a verb (e.g., "to scuba dive" is correct; "to scuba" is not standard).

Noun

1. a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is an acronym for self-contained underwater breathing apparatus