plural of Ur-text

plural of ur-continent

plural of ur-ocean

(pathology) Blood poisoning resulting from the retention of waste products usually excreted as urine.

(anatomy) The tube through which urine exits the body and, in penises, through which semen is ejaculated.

(organic chemistry, uncountable) A water-soluble organic compound, CO(NH₂)₂, formed by the metabolism of proteins and excreted in the urine.

(chemistry) the enzyme, found in soil bacteria and some plants, that catalyzes the hydrolysis of urea into ammonia and carbon dioxide

(anatomy) Either of the two long, narrow ducts that carry urine from the kidneys to the urinary bladder.

(chemistry) Any of several of the condensation products of the reaction between urea and formaldehyde (and their derivatives) used as a thermosetting material.

(botany) A spore produced by a uredinium