Utricle

Part of speech: noun

Pronunciation: /ˈjuː.tɹɪk.əl/

Definitions

1. A small, pouch-like organ located within the inner ear that is essential for maintaining balance and proper spatial awareness
2. An anatomical feature within the vestibular system of the ear that helps in the detection of motion and in the maintenance of equilibrium
3. A tiny sac in the inner ear that plays a critical role in perceiving linear acceleration and in helping to maintain body orientation

Etymology: The inner ear holds its balance sensors in two small sacs, and the larger of them is named for a leather bottle. "Utricle" comes from Latin "ūtriculus," a small skin or leathern bottle, which is a diminutive of "ūter," a bag or bottle made from an animal's hide. The Latin word was used for ordinary containers, and the anatomical sense is a later extension of that picture. The English word is a doublet of "utriculus," meaning the two words descend from the same Latin source but reached English by different routes: "utricle" came through French "utricule," while "utriculus" entered English directly as a Latin term. The result is that a modern anatomist's sac and a Roman's wineskin share one ancestor, and the inner ear's balance organ is named after something that could hold wine or oil.