Outpocketing

Part of speech: noun

Definitions

1. A section that bulges or protrudes outward from the main body of something, such as a bulging part of an organ or a projecting section of a container
2. An outward bulge or pouch extending from the general surface of an object, structure, or biological body
3. A projecting portion or protruding section that sticks out from the main outline of a surface, vessel, or anatomical structure

Etymology: A pocket was once a much larger thing than the slit in your trousers. In Middle English it meant a small bag or pouch, borrowed from Anglo-Norman "poket," a diminutive of "poque," itself likely of Germanic origin. Clothing pockets came later, as the sense narrowed to a bag sewn into a garment. The "out-" here means outward, and "outpocketing" names the result of something pushing or bulging outward from a surface into a pouch-like projection. It is formed from the verb "outpocket," which combines "out" and "pocket" in the same way as words like "outline" or "outgrowth," and the suffix "-ing" turns the action into a thing that results from it. The term is mainly used in technical fields such as anatomy and engineering, where a sac-like bulge in a wall or membrane needs a precise name.

Synonyms: bulge, protrusion, bump