lyt·ic (l?t??k)adj.1. Of, relating to, or causing lysis: a lytic enzyme.2. Of or relating to a lysin.[Greek lutikos, able to loosen; see -lytic.]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.lytic (?l?t?k) adj1. (Medicine) relating to, causing, or resulting from lysis2. (Biochemistry) relating to, causing, or resulting from lysis3. (Biochemistry) of or relating to a lysin[C19: Greek lutikos capable of loosing]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014lyt?ic (?l?t ?k) adj. of, noting, or pertaining to lysis or a lysin. [1885?90;