- a commissioned officer ranking next below a commander and next above a lieutenant.
Origin of lieutenant commander
An Americanism dating back to 1830–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for lieutenant commander
In one of these Lieutenant-Commander Mackenzie was mortally wounded.The Naval History of the United States
Willis J. Abbot.
It was felt that Harry Blunt had a good joke on that lieutenant-commander.An Annapolis First Classman
Lt.Com Edward L. Beach
"By all means, providing he is willing," agreed the Lieutenant-Commander.
"I'll humour the old chap," resumed the Lieutenant-Commander.
"The sooner we get a light on the scene the better," continued the Lieutenant-Commander.
- an officer holding commissioned rank in certain navies immediately junior to a commander
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