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[Greek] A fluid excretion from the kidneys in Mammals, a solid or semisolid excretion in Birds and Reptiles (phys.).

[=u]'rin, n. the fluid which is secreted or separated by the kidneys from the blood and conveyed to the bladder--the principal means of removing the worn-out tissues, esp. the nitrogenous and saline matters, from the system.--n. UR[=E]'SIS, a frequent desire to make water.--adj. U'RIC, pertaining to, or obtained from, urine.--ns. URICÆ'MIA, lithemia; URIDR[=O]'SIS, the excretion of urea in the sweat; URINÆ'MIA, the contamination of the blood with urinary deposits; U'RINAL, a vessel for urine: a convenience for discharging urine.--adjs. U'RINANT (her.) diving; U'RINARY, pertaining to, or like, urine.--n. a reservoir for keeping urine.--v.i. U'RINATE, to discharge urine.--n. URIN[=A]'TION.--adj. U'RIN[=A]TIVE.--n. U'RIN[=A]TOR, a diver.--adjs. URINAT[=O]'RIAL; URINIF'EROUS, conveying urine; URINIF'IC, secreting urine; URINIP'AROUS, producing urine.--ns. URINOL'OGY, the scientific knowledge of urine; URINOM'ETER, an instrument for weighing urine.--adj. URINOMET'RIC.--n. URINOM'ETRY.--adj. URINOSCOP'IC.--n. U'RINOSCOPY, inspection of urine.--adjs. U'RINOSE, U'RINOUS, relating to urine: partaking of the qualities of urine: like urine.--ns. U'ROCHROME, a yellow pigment of the urine; URODIAL'YSIS, a partial suppression of urine; UROGAS'TER, the urinary passages collectively.--adjs. UROGEN'ITAL, pertaining to the urinary and genital organs--also URINOGEN'ITAL, URINOGEN'ITARY, Genito-urinary; UROG'ENOUS, producing urine.--ns. UROLITH[=I]'ASIS, lithiasis; UROL'OGY, urinology; U'ROMANCY, divination by urine; UROPL[=A]'NIA, the abnormal presence of urine in any part of the body; UROPOI[=E]'SIS, the formation of urine.--adj. UROPOIET'IC.--ns. URORRH[=A]'GIA, excessive micturation; URORRH[=E]'A, URORRHOE'A, involuntary passage of urine.--adj. UROSCOP'IC (same as URINOSCOPIC).--ns. U'ROSC[=O]PIST, one skilled in urinoscopy; U'ROSCOPY (same as urinoscopy); UR[=O]'SIS, any disease of the urinary organs. [Fr.,--L. urina; cog. with Gr. ouron, Sans. v[=a]ri, water.]

[Latin] The liquid secreted by the kidneys and evacuated from the urinary bladder. U. is a clear, yellowish, acid liquid of a sp. gr. varying from 1.012 to 1.025. The amount discharged daily is 1100-2000 grammes, the average being 1600 grammes, of which 72 grammes are solids, including urea (33 grammes), uric acid (0.5 gramme), hippuric acid (0.4), creatinine (0.9) and other leucomaines (xanthine, hypoxanthine, guanine), pigmentary bodies (urochrome, urobilin), and inorganic salts (chiefly sodium chloride[18 grammes]; acid sodium phosphate, to which the acidity of the u. is due; and calcium and magnesium phosphates with small quantities of calcium chloride and sodium and potassium sulphates). The urea, uric acid, and hippuric acid are the products of decomposition of proteids; creatinine is a hydration-product of the creatine of muscles; the sulphates represent partly the sulphur of proteids, partly sulphate that have been ingested, the phosphates represent partly the phosphorus of the proteids and of lecithin and partly phosphates ingested in the food; and the other salts are inorganic constituents of the food or of the tissues thrown out in the excreta. The abnormal constituents of the u. are albumin (serum-albumin), globulin, albumose, and peptone, in the conditions known as albuminuria, albumosuria, etc. (q.v.); glucose (glucosuria, diabetes); acetone (acetonuria); oxalic acid (oxaluria); cystin (cystonuria); haemoglobin (haemoglobinuria); and various formed constituents, such as blood-corpuscles (haematuria), pus (pyuria), mucus, epithelia, spermatozoa, casts, and fat (chyluria). The normal constituents may be diminished, as the urea in uraemic conditions, anaemia, etc., and the chlorides in fevers; or the abnormally increased, as the urea in fevers, the urates and uric acid in gout (lithaemia), and the phosphates (phosphaturia). The u. may also contain accidental constituents (drugs, odorous principles, etc.), which have been introduced into the body.

Pale-yellow fluid secreted from the blood by the kidneys, stored in bladder, & discharged through urethra. So urinous a. [old French]

The fluid secreted by the kidneys, stored in the bladder, and discharged by the urethra.

The excretion of the kidneys; normally an amber colored, transparent fluid, having an acid reaction, a specific gravity varying from 1.010 to 1.030,. a saline taste, and a faint odor. The latter is modified by food and drugs; the specific gravity, color, and reaction vary with the ingestion of food, the character and duration of the occupation, and the temperature.

n. [Latin , Greek , Germen , Sanskrit] An animal fluid secreted by the kidneys, whence it is conveyed into the bladder by the ureters, and through the urethra discharged.