Occlusor

Part of speech: noun

Definitions

1. A structure or mechanism that effectively closes or obstructs an opening or channel within a biological system
2. An object or entity that serves to impede or seal off a passage, often found in anatomical contexts
3. An element that acts to close or prevent access through a bodily or mechanical channel

Etymology: "Occlusor" is a Latin-derived noun built from "occluse," a form of the verb "occludere," meaning "to shut up" or "to close off," and the agent suffix "-or," which marks a person or thing that performs an action. Put together, an occlusor is literally the thing that shuts something off. The word is a technical term for a device that blocks a passage or opening, so its meaning stays close to the physical sense of closing that the verb carries.