Learning / English Dictionary

AMMONIA

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

A pungent gas compounded of nitrogen and hydrogen (NH3)

Classified under:

Nouns denoting substances

Hypernyms ("ammonia" is a kind of...):

binary compound (chemical compound composed of only two elements)

Hyponyms (each of the following is a kind of "ammonia"):

ammonium; ammonium ion (the ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion)

Derivation:

ammoniate (treat with ammonia)

Sense 2

Meaning:

A water solution of ammonia

Synonyms:

ammonia; ammonia water; ammonium hydroxide

Classified under:

Nouns denoting substances

Hypernyms ("ammonia" is a kind of...):

liquid (a substance that is liquid at room temperature and pressure)

Derivation:

ammoniate (treat with ammonia)

Credits

 Context examples: 

An X-linked urea cycle metabolic disorder characterized by deficiency of ornithine carbamoyltransferase, resulting in the accumulation of amino acids and ammonia in the serum.

(Ornithine Carbamoyltransferase Deficiency Disease, NCI Thesaurus)

Nickel chloride is used in electroplating, in nickel catalysts and to absorb ammonia in industrial gas masks.

(Nickel Chloride, NCI Thesaurus)

An X-linked urea cycle metabolic disorder characterized by deficiency of ornithine transcarbamylase, resulting in the accumulation of ammonia in the serum.

(Ornithine Transcarbamylase Deficiency, NCI Thesaurus)

Asparaginase hydrolyzes L-asparagine to L-aspartic acid and ammonia, thereby depleting these cells of asparagine and blocking protein synthesis and tumor cell proliferation, especially in the G1 phase of the cell cycle.

(Pegaspargase, NCI Thesaurus)

Upon intravenous administration of pegylated recombinant L-asparaginase Erwinia chrysanthemi, asparaginase hydrolyzes L-asparagine to L-aspartic acid and ammonia, thereby depleting cancer cells of asparagine thus blocking protein synthesis and tumor cell proliferation.

(Pegylated Recombinant L-asparaginase Erwinia chrysanthemi, NCI Thesaurus)

This species is nonmotile, metabolizes arginine with the subsequent release of ammonia into the broth medium, resistant to penicillins and cephalosporins, while tetracycline (adults only) and erythromycin are effective chemotherapeutic agents.

(Mycoplasma hominis, NCI Thesaurus)

The hippurate salt form of methenamine, a prodrug and inactive weak base that slowly hydrolyzes in acidic urine to ammonia and the effective, urinary tract antiseptic formaldehyde.

(Methenamine Hippurate, NCI Thesaurus)

The synthetic sulfate salt of hydrazine, a derivative of ammonia.

(Hydrazine sulfate, NCI Thesaurus)

A laboratory test result indicating increased levels of ammonia in the blood.

(Hyperammonemia, NCI Thesaurus)

It results in accumulation of ammonia in the body.

(Inborn Urea Cycle Disorder, NCI Thesaurus)