cinerin definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
either of two compounds, CHO and CHO, in pyrethrum flowers, used in insecticides
Origin: ; from Classical Latin cinis, ashes (see incinerate) plush -in
cinerin definition by American Heritage Dictionary
Either of two compounds, C20H28O3 or C21H28O5, used in insecticides.
Origin: Latin cinis, ciner-, ashes + -in.