Glossary of Scuba Diving

Did you know that scuba is an acronym?
Do you know what DIN means?

The glossary contains terms, acronyms, expressions, and other related nomenclature relative to scuba diving. You can also select a glossary category to get a better grouping of the definitions. And for each entry, you can learn more from the encyclopedia.

  • Upwelling

    The process known as “upwelling” is caused by the winds blowing across the surface of the ocean and push water away. Colder water then rises up from deeper beneath the surface to take the place of the water that was pushed away. It is also the opposite of downwelling.

  • Volume

    The volume is the term used to describe the three dimensional space that an object occupy. It can be counted in litres for liquids and gasses or cubic meters for solids. Volume in cubic meters is measured by multiplying the width by the height by the length of a squared object as an example.

  • Wing

    A wing is an air cell used for buoyancy control. It is normally composed of a bladder protected by a nylon outer shell. A wing can have a horseshoe shape or a donut shape. It is attached to the plate of a diving harness. Some brands of scuba gear started to offer one piece wing…