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 ROOTS. The roots shown in the artsy picture at the right, from a weed in my garden, the Three-seeded Mercury, Acalypha rhomboidea, are fibrous roots. On our Roots Page we tell of a rye grass plant which had 380 miles of branching and rebranching roots, and 14 billion root hairs. Those branching and rebranching roots were fibrous roots. Fibrous roots are probably the most common root type.