Ah, the letter A--the first letter in the alphabet. The letter that gave us such great investing terms like amortization, annuity, arbitrage, annual report, and Alan Greenspan.
Example terms: bid price, bear market, buy side, Bloomberg, and bond ratings.
Example terms: CAGR, CAPM, current ratio, custodial account, corporate governance, and consumer price index (CPI).
Example terms: debt/equity ratio, dividend yield, double taxation, deflation, and deferred tax asset.