A demilune refers to several things, all sharing the common characteristic of a crescent or half-moon shape. Let's explore the different meanings:
Demilune in Anatomy (Histology)
In anatomy, a demilune, also known as a crescent of Giannuzzi, is a group of serous cells found in salivary glands. These are small, crescent-shaped clusters of granular, deeply staining cells. They are situated between clearer mucus-producing cells and the basement membrane within the alveoli of mixed salivary glands. Demilunes are always composed of serous cells and secrete zymogens, which are inactive enzyme precursors. They are specifically found in the submandibular and sublingual glands, but not the parotid gland. [Source: Merriam-Webster Medical, Wikipedia, various histology resources]
Demilune in Design and Furniture
In design, a demilune describes a half-moon or crescent-shaped object. A common example is the demilune table, a small accent table with a curved front and a flat back designed to fit snugly against a wall. The term can also apply to other furniture pieces such as settees or sofas with a similar shape. [Source: Chairish, Coup D'Etat]
Demilune in Engineering and Water Management
In engineering, particularly in water harvesting, demilunes are half-moon-shaped basins dug into the earth. This technique helps collect and retain rainwater. [Source: Greener.Land]
Demilune in Military Fortifications
Historically, a demilune was a crescent-shaped fortification used as an outwork to protect the main defensive structure. [Source: U.S. National Park Service]
In summary, the meaning of "demilune" depends heavily on context. The crescent shape is the unifying characteristic across its various meanings.
