having an irregular or discontinuous arrangement, as of leaflets along a stem.
Origin of interrupted
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
broken, discontinued, or hindered
(of plant organs, esp leaves) not evenly spaced along an axis
Also: deceptive music (of a cadence) progressing from the dominant chord to any other, such as the subdominant or submediant
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