trimerous

Having three similar segments or parts.

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

In botany, of three members; having the parts or members three in each cycle. Frequently written 3-merous.

In entomology: Divided into three joints; having three segments, as the tarsus of a beetle, thus.

Having the tarsi normally three-jointed, as a beetle; of or pertaining to the Trimera. Also trimeran.