actinide series — Chem. the series of radioactive elements that starts with actinium and ends with lawrencium. [1940 45] * * * … Universalium
actinide series — ac′ti•nide se ries [[t]ˈæk təˌnaɪd[/t]] n. chem. the series of mostly synthetic radioactive elements whose atomic numbers range from 89 (actinium) through 103 (lawrencium) • Etymology: 1940–45 … From formal English to slang
actinide — [ak′tə nīd΄] n. [< ACTIN(IUM) + IDE] any of the elements in the series (actinide series) of radioactive, metallic chemical elements from element 89 (actinium) through element 103 (lawrencium): actinides resemble lanthanides in electronic… … English World dictionary
actinide element — ▪ chemical element group Introduction any of a series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89–103). As a group they are significant largely because of their radioactivity.… … Universalium
Actinide — The atomic bomb dropped on Nagasaki had a plutonium charge.[1] The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium thro … Wikipedia
Actinide concept — The actinide concept in nuclear chemistry was first theorized by Glenn T. Seaborg in 1944, resulting in the correction of Dmitri Mendeleev s periodic table of the elements by placing a new actinide series below the lanthanide series. In later… … Wikipedia
actinide — n. (also actinoid) Chem. any of the series of 15 radioactive elements having increasing atomic numbers from actinium to lawrencium. Phrases and idioms: actinide series this series of elements. Etymology: ACTINIUM + IDE as in lanthanide … Useful english dictionary
actinide — /ak teuh nuyd /, n. Chem. any element of the actinide series. [1940 45; ACTIN + IDE, on the model of LANTHANIDE] * * * Any of the series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89–103) … Universalium
actinide — ac•ti•nide [[t]ˈæk təˌnaɪd[/t]] n. chem. any element of the actinide series • Etymology: 1945; actin ( ium) + ide, on the model of lanthanide … From formal English to slang
Actinide — La série chimique des actinides comprend les éléments chimiques du tableau périodique se situant entre l actinium et le lawrencium, possédant donc un numéro atomique entre 89 et 103 inclus. Les actinides sont tous des éléments radioactifs et… … Wikipédia en Français
