trimerous

[trim-er-uh s]

adjective

Botany. (of flowers) having members in each whorl in groups of three.

Entomology. having three segments or parts.

Origin of trimerous

1820–30; < New Latin trimerus, equivalent to trimer- (see trimer) + -us -ous

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for trimerous

Historical Examples of trimerous

So in fuchsias, a very common deviation consists in a trimerous and rarely a dimerous symmetry of the flower.
Vegetable Teratology
Maxwell T. Masters
A very minute joint at the base of the claw-joint, in most Tetramerous and Trimerous beetles.
An Introduction to Entomology: Vol. III (of 4)
William Kirby
Trimerous insects are those whose tarsi consist of only three joints.
An Introduction to Entomology: Vol. III (of 4)
William Kirby

British Dictionary definitions for trimerous

trimerous

adjective

(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

trimerous in Science

trimerous

[trĭm′ər-əs]

Having three similar parts or segments.

Having flower parts, such as petals, sepals, and stamens, in sets of three.