root sheath n.
Either of two epidermic layers of the hair follicle.
- Roots music
noun 1. another name for world music 2. reggae, esp when regarded as authentic and uncommercialized noun any music identified with the early times of a particular culture Usage Note music
noun, Botany. 1. a rhizome.
noun 1. Horticulture. a root and its associated growth buds, used as a stock in plant propagation. 2. Botany. a rhizome. noun 1. another name for rhizome 2. another name for stock (sense 7) 3. (biology) a basic structure from which offshoots have developed rootstock (rt’stŏk’, rt’-) See rhizome.
noun, Mathematics. 1. the theorem that a given infinite series converges if the n th root of the absolute value of the n th term approaches a limit less than 1 as n increases without bound.