New Oxford American Dictionary

The New Oxford American Dictionary
Elizabeth J. Jewell and Frank R. Abate (Editors)

An American dictionary created by the American editors at Oxford's U.S. Dictionaries Program. It is based on analysis of Oxford's 200 million word database of contemporary North American English, and features a revolutionary defining style. There are fewer numbered main senses for each entry, with related subsenses grouped together under each main sense. There are more than a 100,000 example sentences that illustrate how the language is actually used by American speakers and writers today.

Some regard The New Oxford American Dictionary (NOAD) as the American translation (two countries separated by a common tongue) of the New Oxford Dictionary of English (NODE), published in England in 1998, and indeed there is a very close relationship between the two volumes.

http://www.oup-usa.org/noad
2192 pages, September 2001, Oxford University Press
ISBN 019511227X (amazon.com, search)