👉 Filamentous refers to a type of material that has an array of small, closely packed and often arranged in a spiral pattern. Filaments are commonly found in various objects such as plants, fungi, and bacteria. They have a characteristic structure that allows them to grow and spread through the environment, much like the branching structures of plants or the spines on bacteria. Filaments can also be used in the production of different materials, including plastics, paper, glass, and ceramics.