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Related to trimerous: tetramerous
1. Having three similar segments or parts.
2. Botany Having flower parts, such as petals, sepals, and stamens, in sets of three.
1. (Botany) (of plants) having parts arranged in groups of three
2. (Zoology) consisting of or having three parts
trim•er•ous(ˈtrɪm ər əs)
1. (of flowers) having members in each whorl in groups of three.
2. (of arthropods) having three segments or parts.