Also found in: Wikipedia.
1. Of, relating to, or being a work that in style or form falls between the classical and popular genres.
2. Of, relating to, or being a classical composition that enjoys popular appeal because of modern elements.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
intermediate in style between classical and contemporary, often referring to music
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
sem•i•clas•si•cal(ˌsɛm iˈklæs ɪ kəl, ˌsɛm aɪ-)
intermediate in style between classical and popular music.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.