Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «S»:
Sun poisoning: 1. A nonscientific term sometimes used to refer to the serious and even potentially fatal symptoms of severe sunburn and accompanying dehydration. When used in this sense, sun poisoning is a medical emergency. Symptoms of sun poisoning include fever and chills, nausea, rapid heartbeat...
Sun protection factor (SPF)
Sun protection factor (SPF): A number on a scale for rating the degree of protection provided by sunscreens. SPF stands for Sun Protection Factor.
SPF numbers on a package can range from as low as 2 to as high as 100. These numbers refer to the product's ability to screen or block out the sun's bu...
Sunburn: Sunburn is an
inflammation of the skin that develops in response to exposure to ultraviolet
(UV) radiation from the sun or from tanning beds and booths that emit UV radiation. Sunburn is manifested by reddened, painful skin that may develop blisters.
Sunburn early in life increases one's...
Sundowning: also known as Sundown Syndrome, a term used to refer to behavioral changes that often occur in the late afternoon or evening in people with Alzheimer's disease and similar conditions. The behavioral changes make take the form of aggression, agitation, delusions, hallucinations, paranoia,...
Sune K. Bergstrom
Sune K. Bergstrüm: See: Bergstrüm, Sune K....
Sunscreen: A substance that blocks the effect of the sun's harmful rays. Using
lotions that contain sunscreens can reduce the risk of skin cancer, including melanoma....
Super spreader: A highly infectious person who spreads the agent of an infectious disease to many other people. The historic prototype of the super spreader was Typhoid Mary. The term has also been applied to some persons with SARS (severe acute respiratory syndrome) who seemed to have inadvertently...
Super-: Prefix meaning meaning above, more than normal, or excessive. As in superaspirin, superbug, superjacent, supernumerary, supersize, supertaster. From the Latin preposition super meaning above.
See also: Hyper-....
Superaspirin: A class of drugs that act in certain but not all ways like aspirin. Also known as Cox-2 inhibitors, these drugs selectively block a specific enzyme called Cox-2. Inhibiting this enzyme impedes the production of the chemical messengers that cause the pain and swelling of arthritis infla...
Superbug: An informal term for a bacterium that has become resistant to antibiotics usually used to treat it, as methicillin-resistant Staphylococcus aureus (MRSA) or any multiresistant bacterium.
"A drug-resistant superbug that spreads by skin contact is infecting thousands of people across the US ...
Supercentenarian: Someone 110 years old or over (no upper limit). This term was coined in 1991. See also: Age by decade....
Supercilious: Arrogant, haughty or disdainful. From the raising of an eyebrow ("supercilium" in Latin). Supercilious is an example of a word derived from anatomy that has lost its anatomic meaning but been retained for its figurative sense....
Superfetation: An extremely rare situation in which a pregnant woman
becomes pregnant a second time with another (younger) fetus. Superfetation is
characterized by the fertilization and the
implantation of a second oocyte in a uterus already containing the
product of a previous conception. Super...
Superficial: In anatomy, on the surface or shallow. As opposed to deep. The skin is superficial to the muscles. The cornea is on the superficial surface of the eye.
For a more complete listing of terms used in medicine for spatial orientation, please see the entry to "Anatomic Orientation Terms"....
Superficial spreading melanoma
Superficial spreading melanoma: See: Melanoma, superficial spreading....