The American Heritage Dictionary of the English Language, Fourth Edition -LRB- / O2000 / O-RRB-, Houghton Mifflin Company : "" A word formed from the initial letters of a name, such as WAC for Women's Army Corps, or by combining initial letters or parts of a series of words, such as radar for radio detecting and ranging ". '
Radar - Détection et télémétrie RAdio