Page:U.S. Government Printing Office Style Manual 2008.djvu/267

Abbreviations and Letter Symbols


 * s—second (time)
 * s—shilling
 * S—Siemens
 * sb—stilb
 * scp—spherical candlepower
 * s·ft—second-foot
 * shp—shaft horsepower
 * slug—slug
 * sr—steradian
 * sSf—standard saybolt fural
 * sSu—standard saybolt universal
 * stdft³—standard cubic foot (feet)
 * Sus—saybolt universal second(s)
 * T—tera (prefix, 1 trillion)
 * Tft³—trillion cubic feet
 * T—tesla
 * t—tonne (metric ton)
 * tbsp—tablespoonful
 * thm—therm
 * ton—ton
 * tsp—teaspoonful
 * Twad—twaddell
 * u—(unified) atomic mass unit
 * UHF—ultrahigh frequency
 * V—volt
 * VA—voltampere
 * var—var
 * VHF—very high frequency
 * V/m—volt per meter
 * W—watt
 * Wb—weber
 * Wh—watthour
 * W/(m·K)—watt per meter kelvin
 * W/sr—watt per steradian
 * W/(sr·m²)—watt per steradian square meter
 * x—unknown quantity (italic)
 * yd—yard
 * yd²—square yard
 * yd³—cubic yard
 * yr—year

When Latin abbreviations are used, follow this list.


 * a.—annus, year; ante, before
 * A.A.C.—anno ante Christum in the year before Christ
 * A.A.S.—Academiae Americanae Socius, Fellow of the American Academy [Academy of Arts and Sciences]
 * A.B.—artium baccalaureus, bachelor of arts
 * ab init.—ab initio, from the beginning
 * abs. re.—absente reo, the defendant being absent
 * A.C.—ante Christum, before Christ
 * A.D.—anno Domini, in the year of our Lord
 * a.d.—ante diem, before the day
 * ad fin.—ad finem, at the end, to one end
 * ad h.l.—ad hunc locum, to this place, on this passage
 * ad inf.—ad infinitum, to infinity
 * ad init.—ad initium, at the beginning
 * ad int.—ad interim, in the meantime
 * ad lib.—ad libitum, at pleasure
 * ad loc.—ad locum, at the place
 * ad val.—ad valorem, according to
 * A.I.—anno inventionis, in the year of the discovery
 * al.—alia, alii, other things, other persons
 * A.M.—anno mundi, in the year of the world; Annus mirabilis, the wonderful year [1666]; a.m., ante meridiem, before noon
 * an.—anno, in the year; ante, before
 * ann.—annales, annals; anni, years
 * A.R.S.S.—Antiquariorum Regiae Societatis Socius, Fellow of the Royal Society of Antiquaries