the area of soil that surrounds the roots of a plant and is altered by the plant’s root growth, nutrients, respiration, etc.
the region of the soil in contact with the roots of a plant. It contains many microorganisms and its composition is affected by root activities
The soil zone that surrounds and is influenced by the roots of plants. Within the rhizosphere, roots secrete a slimy lubricating substance, called mucigel, that cause the particles of soil to adhere to the roots, assisting in the uptake of water, and encourages the growth of nitrogen-fixing bacteria and other beneficial microorganisms.
noun, plural rhizotomies. Surgery. 1. the surgical section or cutting of the spinal nerve roots, usually posterior or sensory roots, to eliminate pain. noun (pl) -mies 1. surgical incision into the roots of spinal nerves, esp for the relief of pain rhizotomy rhi·zot·o·my (rī-zŏt’ə-mē) n. Surgical severance of spinal nerve roots, as for the relief […]
noun 1. See under Rh factor. noun, Physiology. 1. any of a type of specific antigen present on the surface of red blood cells, persons having inherited such antigens being designated Rh+ (Rh positive) and persons lacking them, a much smaller group, being designated Rh− (Rh negative) blood of Rh− persons is incompatible with Rh+ […]
- Rh null syndrome
Rh null syndrome n. A syndrome that is characterized by a lack of all Rh antigens, hemolytic anemia that has been compensated for by the body, and stomatocytosis.
noun, plural rhos. 1. the 17th letter of the Greek alphabet (P, ρ). 2. the consonant sound represented by this letter. 1. Rhodesia. noun (pl) rhos 1. the 17th letter in the Greek alphabet (Ρ, ρ), a consonant transliterated as r or rh rho n. Symbol ρ The 17th letter of the Greek alphabet.