| Library / English Dictionary |
NITROGEN
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
A common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues
Synonyms:
Classified under:
Hypernyms ("nitrogen" is a kind of...):
chemical element; element (any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter)
gas (a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely)
Hyponyms (each of the following is a kind of "nitrogen"):
azote (an obsolete name for nitrogen)
liquid nitrogen (nitrogen in a liquid state)
Holonyms ("nitrogen" is a substance of...):
air (a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of)
Derivation:
nitrify; nitrogenize (treat with nitrogen or a nitrogen compound)
nitrogenous (of or relating to or containing nitrogen)
Context examples:
A modified glutathione analogue and nitrogen mustard prodrug, with potential antineoplastic activity.
(Canfosfamide, NCI Thesaurus)
Also called blood urea nitrogen and urea nitrogen.
(BUN, NCI Dictionary)
A relative measurement (ratio or percentage) (ratio) of the blood urea nitrogen (BUN) to the creatinine in a biological specimen.
(Blood Urea Nitrogen To Creatinine Ratio Measurement, NCI Thesaurus/CDISC)
Trees are particularly good at filtering air pollutants such as ozone, sulphur dioxide, nitrogen oxides and particulate matter, which come from cars and roadworks.
(People Living Near Parks in Cities Less Likely to Face Early Death, The Titi Tudorancea Bulletin)
A high level of urea nitrogen in the blood may be a sign of a kidney problem.
(Blood Urea, NCI Dictionary)
A phenylalanine derivative of nitrogen mustard with antineoplastic activity.
(Melphalan, NCI Thesaurus)
Issue associated with the facility-supplied medical gases such as medical air, oxygen, nitrous oxide, and nitrogen.
(Medical Gas Supply Problem, Food and Drug Administration)
A bifunctional alkylating agent and phenylalanine derivative of nitrogen mustard.
(Melphalan Hydrochloride, NCI Thesaurus)
A propylene glycol-free intravenous formulation containing the hydrochloride salt of the nitrogen mustard phenylalanine derivative melphalan complexed with polyanionic sulfobutyl ether beta-cyclodextrin (SBE-CD) with potential antineoplastic activity.
(Melphalan Hydrochloride/Sulfobutyl Ether Beta-Cyclodextrin Complex, NCI Thesaurus)
A taxonomic family of bacterium, which perform nitrogen fixation, in the phylum Proteobacteria that includes the genera Methylobacterium and Meganema, among others.
(Methylobacteriaceae, NCI Thesaurus)
