Root sheath
root sheath n.
Either of two epidermic layers of the hair follicle.
Read Also:
- 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
- Rootstalk
noun, Botany. 1. a rhizome.
- Rootstock
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.
- Root-test
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.
- Root treatment
noun 1. (dentistry) a procedure, used for treating an abscess at the tip of the root of a tooth, in which the pulp is removed and a filling (root filling) inserted in the root canal Also called root-canal therapy