(MONEY Magazine) – Once a decade, Merriam-Webster rewrites its best-selling collegiate dictionary, adding new words, new definitions of old words and specialized words that have become part of everyday life. These days, money talks.

"The dictionary is the glossary of American life," explains John Morse, Merriam-Webster's president and publisher. "Money and finance are in the top five categories of new words being added." The definition of bubble, for example, was revised to include "a state of booming economic activity (as in a stock market) that often ends in economic collapse." Additions include dead presidents (referring to paper currency) and dead-cat bounce ("a brief and insignificant recovery, as of stock prices, after a steep decline"). "There's a certain vividness to the business language," says Morse.

Day traders and market makers have also found their way into the classic reference book, as well as pink sheet ("a daily listing of over-the-counter stocks") and slotting fee (which is charged by a vendor in exchange for carrying a manufacturer's product). Released this summer, the 11th edition includes 10,000 new words and more than 100,000 new meanings and revisions. But since the dictionary always stays about the same size, words also get removed. Among this year's deletions, appropriately enough: NOW accounts, the once popular interest-bearing checking account.

--ELLEN MCGIRT