Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'synanon'after a treatment center founded (1958) in Santa Monica, Calif.: supposedly < a patient's
slurred pron. of “symposium” & “seminar”