Definition of "lieutenant junior grade" []

• A commissioned rank in the U.S. Navy or Coast Guard that is above ensign and below lieutenant. (noun)
• One who holds this rank. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Promoted to lieutenant junior grade in May 1953, he remained in the U.S. Naval Reserve until he resigned his commission on October 21, 1960, all the while remaining “physically qualified for all duty with waiver,” the waiver being a “trick knee” sustained in a college boxing bout."