| SPF | skin protection factor; specific-pathogen free; spectrophotofluorometer; S-phase fraction; split pro... |
|---|---|
| SUN | standard unit of nomenclature; serum urea nitrogen |
| APIP | additional personal injury protection |
| CPC | central posterior curve; cerebellar Purkinje cell; cerebral palsy clinic; cerebral performance categ... |
| CPT | carnitine palmityl transferase; carotid pulse tracing; chest physiotherapy; child protection team; c... |
| SPF | Sun Protection Factor |
|---|---|
| SUN | Serum Urea Nitrogen |
| EPA | Environmental Protection Agency |
| US EPA | Environmental Protection Agency |
| FQPA | Food Quality Protection Act |
protection
| sun protection factor | A number on a scale (from 2 upwards) for rating sunscreens. Sunscreens with an spt of 15 or higher provide the best protection from the sun's harmful rays. (12 Dec 1998) |
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| setting sun sign | <clinical sign> Retraction of the upper lid without upgaze so that the iris seems to "set" below the lower lid; suggestive of neurologic damage in the newborn, but usually clears up without sequelae. See: Collier's sign, Epstein's sign. (05 Mar 2000) |
| sun | <botany> See Sunn. 1. The luminous orb, the light of which constitutes day, and its absence night; the central body round which the earth and planets revolve, by which they are held in their orbits, and from which they receive light and heat. Its mean distance from the earth is about 92,500,000 miles, and its diameter about 860,000. Its mean apparent diameter as seen from the earth is 32' 4<sec/, and it revolves on its own axis once in 25 1/3 days. Its mean density is about one fourth of that of the earth, or 1.41, that of water being unity. Its luminous surface is called the photosphere, above which is an envelope consisting partly of hydrogen, called the chromosphere, which can be seen only through the spectroscope, or at the time of a total solar eclipse. Above the chromosphere, and sometimes extending out millions of miles, are luminous rays or streams of light which are visible only at the time of a total eclipse, forming the solar corona. 2. Any heavenly body which forms the center of a system of orbs. 3. The direct light or warmth of the sun; sunshine. "Lambs that did frisk in the sun." (Shak) 4. That which resembles the sun, as in splendor or importance; any source of light, warmth, or animation. "For the Lord God is a sun and shield." (Ps. Lxxiv. 11) "I will never consent to put out the sun of sovereignity to posterity. <medicine>" (Eikon Basilike) Sun and planet wheels See Sun and planet wheels, above. Under the sun, in the world; on earth. "There is no new thing under the sun." Sun is often used in the formation of compound adjectives of obvious meaning; as, sun-bright, sun-dried, sun-gilt, sunlike, sun-lit, sun-scorched, and the like. Origin: OE. Sunne, sonne, AS. Sunne; akin to OFries. Sunne, D. Zon, OS. & OHG. Sunna, G. Sonne, Icel. Sunna, Goth. Sunna; perh. Fr. Same root as L. Sol. 297. Cf. Solar, South. Source: Websters Dictionary (01 Mar 1998) |
| sun star | <zoology> See Sun star, under Sun. Source: Websters Dictionary (01 Mar 1998) |
| sun-struck | <medicine> Overcome by, or affected with, sunstroke; as, sun-struck soldiers. Source: Websters Dictionary (01 Mar 1998) |
| browse protection | <ecology> Mechanical or chemical protection of shrubs and trees against damage caused by game and grasing animals. (09 Oct 1997) |
| cathodic protection | <chemistry> The attachment of an active metal to a system to protect the system from corrosion. The active metal serves as the anode, making the metal in the system a cathode. (16 Mar 1998) |
| protection | Synonym: protective block. Origin: see protective (05 Mar 2000) |
| protection test | A test to determine the antimicrobial activity of a serum by inoculating a susceptible animal with a mixture of the serum and the virus or other microbe being tested. Synonym: neutralization test. (05 Mar 2000) |
| ecological protection | <ecology> Protection consists of measures undertaken to protect and preserve elements of an ecosystem's structure and functions against future degradation. (10 Nov 1998) |
| environmental protection agency | <organisation> The U.S. Regulatory agency for biotechnology of microbes. The major lawsunder which the agency has regulatory powers are the Federal Insecticide, Fungicide, and Rodenticide act (FIFRA), and the Toxic Substances ControlAct (TSCA). (30 Mar 1998) |
| united states environmental protection agency | An agency in the executive branch which endeavors to abate and control pollution in the areas of air, water, solid waste, noise, radiation, and toxic substances. (12 Dec 1998) |
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