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: U- U. U3 Ua Ub Uc Ud Uf Ug Uh Ui Uk Ul Um Un Up Ur Us Ut Uu Uv Uw Ux Uy Uz
urchin | urchon | urd | urdu | ure | urea | urea-formaldehyde resin | ureal | ureameter | urease | urechitin

urea

RELATED WORD :


 : 
Noun
 : 
u=re=a

CIDE DICTIONARY

ureaa. [NL. See Urine.].
     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.  [1913 Webster]
    " 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."  [1913 Webster]
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.

OXFORD DICTIONARY

urea, n. Biochem. a soluble colourless crystalline nitrogenous compound contained esp. in the urine of mammals.

Derivative
ureal adj.
Etymology
mod.L f. F ur{eacute}e f. Gk ouron urine

For further exploring for "urea" in Webster Dictionary Online


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