ureas
plural of urea
• Sauer, urase
Source: Wiktionary
U"re*a, a. Etym: [NL. See Urine.] (Physiol. Chem.)
Definition: A very soluble crystalline body which is the chief constituent of the urine in mammals and some other animals. It is also present in small quantity in blood, serous fluids, lymph, the liver, etc.
Note: It is the main product of the regressive metamorphosis (katabolism) of proteid matter in the body, and is excreted daily to the amount of about 500 grains by a man of average weight. Chemically it is carbamide, CO(NH2)2, and when heated with strong acids or alkalies is decomposed into carbonic acid and ammonia. It unites with acids to form salts, as nitrate of urea, and it can be made synthetically from ammonium cyanate, with which it is isomeric. Urea ferment, a soluble ferment formed by certain bacteria, which, however, yield the ferment from the body of their cells only after they have been killed by alcohol. It causes urea to take up water and decompose into carbonic acid and ammonia. Many different bacteria possess this property, especially Bacterium ureæ and Micrococcus ureæ, which are found abundantly in urines undergoing alkaline fermentation.
Source: Webster’s Unabridged Dictionary 1913 Edition
27 April 2024
(adjective) remarkable or out of the ordinary in degree or magnitude or effect; “a great crisis”; “had a great stake in the outcome”
The world’s most expensive coffee costs more than US$700 per kilogram. Asian palm civet – a cat-like creature in Indonesia, eats fruits, including select coffee cherries. It excretes partially digested seeds that produce a smooth, less acidic brew of coffee called kopi luwak.
