AND gate a circuit in a computer that fires only when all of its inputs fire
365 days a year that is not a leap year
16 PF a self-report personality inventory developed by Raymond B. Cattell to measure the 16 personality dimensions that emerged from his factor analysis of a wide range of traits
366 days in the Gregorian calendar: any year divisible by 4 except centenary years divisible by 400
1st class mail that includes letters and postcards and packages sealed against inspection
440 yards a unit of length equal to a quarter of 1 mile
880 yards a unit of length equal to half of 1 mile
ABO group a classification system for the antigens of human blood
Aaron Burr United States politician who served as vice president under Jefferson; he mortally wounded his political rival Alexander Hamilton in a duel and fled south (1756-1836)
401-k plan a retirement savings plan that is funded by employee contributions and (often) matching contributions from the employer; contributions are made from your salary before taxes and the funds grow tax-free until they are withdrawn, at which point they can be converted into an IRA; funds can be transferred if you change employers and you can (to some extent) manage the investments yourself
ABO system a classification system for the antigens of human blood
Aare River a river in north central Switzerland that runs northeast into the Rhine
Abies alba tall timber tree of central and southern Europe having a regular crown and grey bark
8 May 1945 the date of Allied victory in Europe, World War II
ADP system a system of one or more computers and associated software with common storage
Aaron's rod tall-stalked very woolly mullein with densely packed yellow flowers; ancient Greeks and Romans dipped the stalks in tallow for funeral torches
Abney level a surveying instrument consisting of a spirit level and a sighting tube; used to measure the angle of inclination of a line from the observer to the target
.22 caliber of or relating to the bore of a gun (or its ammunition) that measures twenty-two hundredths of an inch in diameter
.38 calibre of or relating to the bore of a gun (or its ammunition) that measures thirty-eight hundredths of an inch in diameter
.38 caliber of or relating to the bore of a gun (or its ammunition) that measures thirty-eight hundredths of an inch in diameter