consisting of or divided into eight parts.
Botany. (of flowers) having eight members in each whorl.
Origin of octamerous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
consisting of eight parts, esp (of flowers) having the parts arranged in groups of eight
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