Definition of vesicle

The word "vesicle" has a fascinating history. It originates from the Latin word "vesicula," which means "little bladder" or "small bag." In the 16th century, anatomists and scientists began using the term to describe small sacs or sac-like structures found within the body, such as vesicles of the liver or vesicles in the kidneys. The word was later adopted into English and other languages, and its meaning expanded to include any small, usually fluid-filled, sac or container. In biology, vesicles are now commonly referred to as membranous sacs that transport substances or store chemicals within cells. In medicine, vesicles can refer to blisters, bubbles, or other small, fluid-filled structures on the skin. Throughout its history, the word "vesicle" has retained its origins as a descriptive term for small, sac-like structures, and its use continues to be an important part of anatomical, biological, and medical language.