Desmosome

Part of speech: noun

Definitions

1. A specialized connection between neighboring cells that anchors protein filaments and holds tissues together through strong adhesive proteins
2. A spot-like junction where intermediate filaments from one cell attach to another cell, providing mechanical strength and stability
3. A cell-to-cell attachment point reinforced by intermediate filaments that prevents tissues from separating under stress or strain

Etymology: Desmosome is a modern scientific coinage, built from two Greek-derived parts: "desmo-", from Greek "desmos" meaning "bond" or "band", and "-some", from Greek "sōma", meaning "body." Together they describe a structure that is literally a "binding body." The first part comes from the Greek word for a bond, the sort of link that holds things together. The second part, "-some", is the same ending found in words like "chromosome" and "ribosome," where it names a distinct body or particle inside a cell. The combination reflects how biologists named a cellular structure that acts as a fastening point between neighbouring cells. The word therefore describes its function in its own construction: a small body whose job is to bind. It was formed from classical roots, not used by ancient Greek writers, who had no concept of cell junctions to name.

Synonyms: desmosomal junction, spot desmosome