an air force officer of a rank comparable to an army brigadier general.
Origin of air commodore
First recorded in 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for air commodore
a senior officer of the Royal Air Force and certain other air forces, of equivalent rank to brigadier in the Army
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012