The word “chaeta” refers to a bristle or a hair-like structure found on certain organisms, particularly in the context of biology. It is commonly used in reference to the chitinous bristles in annelids (segmented worms) and other invertebrates. These structures can serve various functions, including aiding in locomotion, sensing the environment, and providing protection. The term can also be used more broadly in the study of organisms to describe similar filamentous features.
