Zonules

Part of speech: noun

Definitions

1. A series of fine strands or small fibers, often found in the context of biological structures
2. These filaments connect parts of certain organs, playing a role in their function or support
3. They are particularly noted in the eye, where they help maintain the shape and position of the lens

Etymology: "Zonules" is the plural of "zonule," a term for the tiny fibers that hold the lens in place inside the eye. The name comes from Latin "zōnula," meaning "small belt or girdle," a diminutive of "zōna," the belt or girdle that gave English "zone." The image is apt: the fibers ring the lens like a fine band, so anatomists borrowed the Roman word for a little belt. Within English, "zonule" is a doublet of "zonula," the same Latin diminutive reaching the language by a different route, with the Latin form kept largely for the anatomical sense. The English word is built from "zone" plus the diminutive ending "-ule," which is the same ending found in words like "globule" and "molecule," where it marks something small.