Botany. (of flowers) having members in each whorl in groups of three.
Entomology. having three segments or parts.
Origin of trimerous
< New Latin trimerus,
equivalent to trimer-
) + -us -ous
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for trimerous
Historical Examples of trimerous
British Dictionary definitions for trimerous
(of plants) having parts arranged in groups of three
consisting of or having three parts
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
Having three similar parts or segments.
Having flower parts, such as petals, sepals, and stamens, in sets of three.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.