Pentamerous

Part of speech: adjective

Definitions

1. Characterized by the presence of five parts or divisions, especially in relation to specific biological structures or arrangements
2. Indicating a composition that consists of five distinct units or segments commonly found in various organisms
3. Having a structure that features five separate components, often used to describe certain living organisms and their anatomical features

Etymology: "Pentamerous" is built from two Greek-derived parts. The first, "penta-", comes from Greek "pente," meaning "five," the same root that gives English "pentagon" and "pentathlon." The second, "-merous," comes from Greek "meros," meaning "part," which appears in words like "isomer" and "dimerous." Put together, the word literally means "five-parted." Its main home is biology and botany, where it describes organisms or body parts arranged in fives. A starfish's body plan is pentamerous, as are the petals of many flowers, which typically come in sets of five. The suffix "-merous" is a standard technical building block in these fields, so the term is a deliberate scientific formation rather than a word that grew up in everyday speech.

Synonyms: five-part, five-fold