1. A the 1st letter of the Roman alphabet
  2. ASCII (computer science) a code for information exchange between computers made by different companies; a string of 7 binary digits represents each character; used in most microcomputers
  3. Aaron (Old Testament) elder brother of Moses and first high priest of the Israelites; created the golden calf
  4. AIDS a serious (often fatal) disease of the immune system transmitted through blood products especially by sexual contact or contaminated needles
  5. ASEAN an association of nations dedicated to economic and political cooperation in southeastern Asia and who joined with the United States to fight against global terrorism
  6. ADHD condition characterized by behavioral and learning disorders
  7. 10000 the cardinal number that is the product of ten and one thousand
  8. ANOVA a statistical method for making simultaneous comparisons between two or more means; a statistical method that yields values that can be tested to determine whether a significant relation exists between variables
  9. A.D. in the Christian era
  10. AWOL one who is away or absent without leave
  11. 1950s the decade from 1950 to 1959
  12. 1980s the decade from 1980 to 1989
  13. 1930s the decade from 1930 to 1939
  14. 1900s the decade from 1900 to 1909
  15. 1960s the decade from 1960 to 1969
  16. 1920s the decade from 1920 to 1929
  17. 1970s the decade from 1970 to 1979
  18. 1990s the decade from 1990 to 1999
  19. ABC's the elementary stages of any subject (usually plural)
  20. 401-k 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from the employer; contributions are made from your salary before taxes and the funds grow tax-free until they are withdrawn, at which point they can be converted into an IRA; funds can be transferred if you change employers and you can (to some extent) manage the investments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