cinerin [sin-er-in] noun Chemistry. either of two oily, liquid compounds, C20H28O3 or C21H28O5, used as insecticides. Liberaldictionary.com
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019 British Dictionary definitions for cinerin cinerin noun either of two similar organic compounds found in pyrethrum and used as insecticides. Formulas: C 20 H 28 O 3 (cinerin I), C 21 H 28 O 5 (cinerin II) Word Origin for cinerin C20: from Latin ciner-, cinis ashes + -in 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