Ad lib: Abbreviation for the Latin “ad libitum” meaning “at pleasure” and “at one’s pleasure, as much as one desires, to the full extent of one’s wishes.” Sometimes seen on a prescription or doctor’s order. For example, during an overnight fast when the patient is not to eat any food but can have water, the doctor’s order might read: “Water ad lib” (water as desired).
- Aerobic exercise
Brisk exercise that promotes the circulation of oxygen through the blood and is associated with an increased rate of breathing. Examples include running, swimming, and bicycling.
- Aeromonas hydrophila
Aeromonas hydrophila: a type of bacteria commonly found in freshwater or brackish water and in some fish and shellfish. It may cause stomach upset, diarrhea, and vomiting in some individuals if swallowed. It is more likely to cause intestinal symptoms in people with a suppressed immune system, such as people with cancer or those who […]
Aerophagia: Swallowing too much air, a common cause of gas in the stomach and belching. Everyone swallows small amounts of air when eating or drinking. However, rapid eating or drinking, chewing gum, smoking, or ill-fitting dentures may cause a significant increase in swallowed air. The word “phage” in Greek means “to eat.” Aerophagia is literally […]
Aerophobia: An abnormal and persistent fear of flying. Sufferers experience severe anxiety even though they usually realize that the flying does not pose a threat commensurate with their fear. Aerophobia also means an irrational fear of fresh air or drafts of air. Derived from the Greek “aero-“, air or gas + “phobos”, fear = literally, […]
Aerosinusitis: Painful sinus troubles due to changing atmospheric pressures. Aerosinusitis is the cause of sinus pain when going up or down in a plane. Also known as barosinusitis and sinus barotrauma.