Gas 21 : Diffuse, formless fluid normally in a gaseous state. Under normal conditions of temperature and pressure, a gas tends to occupy the entire space uniformly
Navy Medicine, US Naval Hospital Okinawa Online, Glossary of Commonly Used Industrial Hygiene Terms, Attachments to Industrial Hygiene Surveys Performed by USNH Okinawa Industrial Hygiene Dept., Bureau of Medicine and Surgery, Washington, DC., USA (Not Dated). http://www.med.navy.mil/sites/nhoki/Patients/Commu nityHealth/IndustrialHygiene/Documents/Attachments /Glossary%20of%20Commonly%20Used%20Industrial%20Hy giene%20Terms.pdf (OSHA & NAVOSH- Occupn Hlth and Sfty - Amer) {168}