Editing Scuba set (section)

==Etymology==
The word ''SCUBA'' was coined in 1952 by [[Major (United States)|Major]] [[Christian J. Lambertsen|Christian Lambertsen]] who served in the [[U.S. Army Medical Corps]] from 1944 to 1946 as a physician.<ref name="Vann 2004" /> Lambertsen first called the closed-circuit [[Diving rebreather|rebreather]] apparatus he had invented "Laru", an ([[acronym]] for [[Lambertsen Amphibious Respiratory Unit]]) but, in 1952, rejected the term "Laru" for "SCUBA" ("Self-Contained Underwater Breathing Apparatus").<ref name="Lambertson obituary" /> Lambertsen's invention, for which he held several patents registered from 1940 to 1989, was a rebreather and is different from the open-circuit [[diving regulator]] and [[diving cylinder]] assemblies also commonly referred to as scuba.<ref name=OSS />

Open-circuit-demand scuba is a 1943 invention by the [[France|Frenchmen]] [[Émile Gagnan]] and [[Jacques-Yves Cousteau]], but in the [[English language]] Lambertsen's acronym has become common usage and the name ''[[Aqua-lung|Aqua-Lung]]'' (often spelled "aqualung"), coined by Cousteau for use in [[English-speaking world|English-speaking countries]],<ref name=Aqua-lung /> has fallen into secondary use. As with [[radar]], the acronym ''scuba'' has become so familiar that it is generally not capitalized and is treated as an ordinary noun. For example, it has been translated into the [[Welsh language]] as ''sgwba''.{{Citation needed|date=December 2023}}

Although the term was originally an acronym, "scuba" is currently used to refer to the apparatus or the practice of diving using the apparatus, either alone as a common noun, or as an adjective in ''scuba set'' and ''scuba diving'' respectively. It is also used as an adjective referring to equipment or activity relating to diving using self-contained breathing apparatus.<ref>{{Cite web |title=Scuba Definition & Meaning {{!}} YourDictionary |url=https://www.yourdictionary.com/scuba |access-date=2024-06-28 |website=www.yourdictionary.com}}</ref>