noun Etymology: New Latin, from America + New Latin -ium Date: 1946 a radioactive metallic element produced artificially by bombarding plutonium with high-energy neutrons — see element table

New Collegiate Dictionary. 2001.

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  • Americium — Américium Américium Plutoni …   Wikipédia en Français

  • Américium — Plutonium ← Américium → Curium Eu …   Wikipédia en Français

  • AMÉRICIUM — L’américium (symbole Am) est un élément artificiel qui fait partie d’une série d’éléments lourds découverts depuis 1940, les transuraniens . Comme tous ces éléments, il possède de nombreux isotopes, tous radioactifs. Son numéro atomique, 95, le… …   Encyclopédie Universelle

  • Americium — (pronEng|ˌæməˈrɪsiəm) is a synthetic element that has the symbol Am and atomic number 95. A radioactive metallic element, americium is an actinide that was obtained in 1944 by bombarding plutonium with neutrons and was the fourth transuranic… …   Wikipedia

  • americium — AMERÍCIUM s.n. v. americiu. Trimis de ana zecheru, 13.09.2007. Sursa: DEX 98  AMERÍCIUM s.n. v. americiu. Trimis de LauraGellner, 13.09.2007. Sursa: DN …   Dicționar Român

  • americium — Symbol: Am Atomic number: 95 Atomic weight: (243) Radioactive metallic transuranic element, belongs to the actinoids. Ten known isotopes. Am 243 is the most stable isotope, with a half life of 7.95*10^3 years. Discovered by Glenn T. Seaborg and… …   Elements of periodic system

  • americium — ☆ americium [am΄ər ish′ē əm, am΄əris′ē əm ] n. [ModL, after AMERIC(A) + IUM: so named by SEABORG Glenn T(heodore), one of its discoverers, by analogy with EUROPIUM, the corresponding rare earth] a radioactive, metallic chemical element, one of… …   English World dictionary

  • Americium — Eigenschaften …   Deutsch Wikipedia

  • americium — /am euh rish ee euhm/, n. Chem. a transuranic element, one of the products of high energy helium bombardment of uranium and plutonium. Symbol: Am; at. no.: 95. [1945 50, Amer.; AMERIC(A) + IUM] * * * Synthetic radioactive chemical element,… …   Universalium

  • Americium — Ame|ri|ci|um 〈n.; s; unz.; chem. 〉 künstlich hergestelltes radioaktives Element; oV Amerizium [nach Amerika] * * * A|me|ri|ci|um [engl. america = Amerika; ↑ ium (1)], das; s; Symbol: Am: nur künstlich herstellbares, radioaktives, metallisches… …   Universal-Lexikon

  • Americium — americis statusas T sritis fizika atitikmenys: angl. americium vok. Americium, n; Amerizium, n rus. америций, m pranc. américium, m …   Fizikos terminų žodynas

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