noun Music.

a theme in a fugue that occurs simultaneously with the second and often the subsequent themes of the main subject.

Origin of countersubject

First recorded in 1850–55; counter- + subject Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for countersubject



music (in a fugue) the theme in one voice that accompanies the statement of the subject in another
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