Capillament is a term that refers to fine, hair-like structures, particularly those found on plants or microscopic organisms. Some synonyms for capillament include filament, fiber, strand, thread, and hair. These terms all describe slender, elongated structures that are thin and delicate, yet possess a certain strength and flexibility. Other alternatives for capillament include fibril, flax, yarn, and string. In biology, capillament can be used to describe the hair-like structures in the respiratory tract that are involved in gas exchange. These structures are also found in the circulatory system to aid in the delivery of oxygen and nutrients to the cells of the body.