1 De institutione musica ('On the Fundaments of Music', beginning of the 6th c.)  Eclectic treatise influenced by the ancient Greek treatises on the theory and ethics of music, such as those of Aristotle and Ptolemy, Pythagoras and Aristoxenus.
hempen, fibrous(adj) having or resembling fibers especially fibers used in making cordage such as those of jute. fibrous, sinewy, stringy, unchewable(adj) (of meat) full of sinews; especially impossible to chew.
Fibrous Dysplasia. Fibrous dysplasia is a bone disease that destroys normal bone and replaces it with fibrous bone tissue. This tissue is not hard like normal bone, but is soft and stringy, making it more fragile and prone to break. Fractures occur in about 50 percent of patients with fibrous dysplasia.ibrous dysplasia is a bone disease that destroys normal bone and replaces it with fibrous bone tissue.