- nitrogen 13
- a radioactive isotope of nitrogen, atomic mass 13, having a half-life of 9.97 minutes; it decays by positron emission (1.190 MeV) and is used as a tracer in positron emission tomography.
Medical dictionary. 2011.
nitrogen 13
Look at other dictionaries:
nitrogen(I) — nitrogen(I) … English syllables
nitrogen(II) — nitrogen(II) … English syllables
nitrogen(IV) — nitrogen(IV) … English syllables
Nitrogen-13 — Full table General Name, symbol Nitrogen 13,13N Neutrons 6 Protons 7 … Wikipedia
nitrogen — s.m. (chim.) Azot. – Din fr. nitrogène. Trimis de cata, 21.02.2002. Sursa: DEX 98 NITROGÉN s. v. azot. Trimis de siveco, 13.09.2007. Sursa: Sinonime nitrogén s. m. (sil. tro ); simb. N … Dicționar Român
Nitrogen — Ni tro*gen (n[imac] tr[ o]*j[e^]n), n. [L. nitrum natron + gen: cf. F. nitrog[ e]ne. See {Niter}.] (Chem.) A colorless nonmetallic element of atomic number 7, tasteless and odorless, comprising four fifths of the atmosphere by volume in the form… … The Collaborative International Dictionary of English
nitrogen — Symbol: N Atomic number: 7 Atomic weight: 14.0067 Colourless, gaseous element which belongs to group 15 of the periodic table. Constitutes nitrogen78% of the atmosphere and is an essential part of the ecosystem. Nitrogen for industrial purposes… … Elements of periodic system
Nitrogen — (kvælstof) er et grundstof med atomnummer 7 i det periodiske system. Farveløs gas, findes blandt andet i Jordens atmosfære som frit N2 molekyle … Danske encyklopædi
nitrogen — (n.) 1794, from Fr. nitrogène, coined 1790 by French chemist Jean Antoine Chaptal (1756 1832), from comb. form of Gk. nitron sodium carbonate (see NITRO (Cf. nitro )) + Fr. gène producing, from Gk. gen giving birth to (see GEN (Cf. gen)). The gas … Etymology dictionary
nitrogen — nȉtrogēn m DEFINICIJA kem., v. dušik ETIMOLOGIJA nitro + gen … Hrvatski jezični portal
nitrogen — ► NOUN ▪ a colourless, odourless, relatively unreactive gaseous chemical element, forming about 78 per cent of the earth s atmosphere. DERIVATIVES nitrogenous adjective … English terms dictionary
