a. (Med.) Counteracting, or deemed of use in, diseases of the kidneys. -- n. An antinephritic remedy. [ 1913 Webster ]

‖n. [ NL., Gr. "y`dwr water + &unr_; a kidney.] (Med.) An accumulation of urine in the pelvis of the kidney, occasioned by obstruction in the urinary passages. [1913 Webster]

a. (Anat.) Of or pertaining to the mesonephros; as, the mesonephric, or Wolffian, duct. [ 1913 Webster ]

‖n. [ NL., fr. Gr. me`sos middle + nefro`s kidney. ] (Anat.) The middle one of the three pairs of embryonic renal organs developed in most vertebrates; the Wolffian body. [ 1913 Webster ]

a. (Anat.) Of or pertaining to the metanephros. [ 1913 Webster ]

‖n. [ NL., fr. Gr. &unr_; behind + &unr_; kidney. ] (Anat.) The most posterior of the three pairs of embryonic renal organs developed in many vertebrates. [ 1913 Webster ]

{ ‖, n. [ NL. nephralgia, fr. Gr. nefro`s a kidney + &unr_; pain: cf. F. néphralgie. ] (Med.) Neuralgia of the kidneys; a disease characterized by pain in the region of the kidneys without any structural lesion of the latter. Quain. [ 1913 Webster ]

a. (Zool. & Anat.) Of or pertaining to a nephridium. [ 1913 Webster ]

‖n.; pl. Nephridia [ NL., fr. Gr. &unr_; of the kidneys. ] (Zool. & Anat.) A segmental tubule; one of the tubules of the primitive urinogenital organs; a segmental organ. See Illust. under Loeven's larva. [ 1913 Webster ]

n. [ Cf. F. néphrite. See nephritis. ] (Min.) A hard compact mineral, of a dark green color, formerly worn as a remedy for diseases of the kidneys, whence its name; kidney stone; a kind of jade. It varies in color from white to dark green. It is the more common and less valuable variety of jade, the other being jadeite. Large deposits are found in Australia. Called also nephritic stone. See also Jade. [ MW10 ] [ 1913 Webster +PJC ]

n. (Med.) A medicine adapted to relieve or cure disease of the kidneys. [ 1913 Webster ]

{ , a. [ L. nephriticus, Gr. nefritiko`s: cf. F. néphrétique. See Nephritis. ] 1. Of or pertaining to the kidneys or urinary organs; renal; as, a nephritic disease. [ 1913 Webster ]

2. (Med.) (a) Affected with a disease of the kidneys; as, a nephritic patient. (b) Relieving disorders of the kidneys; affecting the kidneys; as, a nephritic medicine. [ 1913 Webster ]

3. Of or pertaining to nephrite. [ PJC ]

Nephritic stone (Min.), Nephrite; jade. See Nephrite. [ 1913 Webster ]

n. [ L., fr. Gr. nefri^tis (sc. &unr_;), fr. nefro`s a kidney. ] (Med.) An inflammation of the kidneys. [ 1913 Webster ]

a. [ Gr. nefro`s a kidney + -lith + ic. ] (Med.) Of or pertaining to kidney stones, or renal calculi. Dunglison. [ 1913 Webster ]

n. [ Gr. nefro`s a kidney + -logy. ] A treatise on, or the science which treats of, the kidneys, and their structure and functions. [ 1913 Webster ]

prop. n. A natural family in some classifications coextensive with the Homaridae.
Syn. -- family Nephropsidae. [ WordNet 1.5 ]

n. [ Gr. nefro`s a kidney + sto`ma mouth. ] (Zool. & Anat.) The funnel-shaped opening of a nephridium into the body cavity. [ 1913 Webster ]

n. [ Gr. nefro`s a kidney + te`mnein to cut: cf. F. néphrotomie. ] (Surg.) Extraction of stone from the kidney by cutting. [ 1913 Webster ]

n. A hormone (C8H11NO3) secreted by the adrenal medulla; it also serves as a neurotransmitter, released at synapses; called also noradrenaline. Chemically it is 2-amino-1-(3, 4-dihydroxyphenyl)ethanol. It is a precursor of epinephrine in the body.
Syn. -- noradrenaline. [ WordNet 1.5 ]

‖n. [ NL. See Peri-, and Nephritis. ] (Med.) Inflammation of the cellular tissue around the kidney. -- Per`i*ne*phrit"ic, a. [1913 Webster]

a. (Anat.) Of or pertaining to the pronephros. [ 1913 Webster ]

‖‖/mhw>, n. [ NL., fr. Gr. &unr_; before + &unr_; a kidney. ] (Anat.) The head kidney. See under Head. [ 1913 Webster ]