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Table of Contents -- urea POS
HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY

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urea

POS

Noun

HYPHEN

u=re=a

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WORDNET DICTIONARY

Noun urea has 1 sense

urea(n = noun.substance) carbamide - the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics;

is a kind of organic compound

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CIDE DICTIONARY

urea, a. [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.

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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