| 释义 |
actinideenUS
ac·ti·nide A0068500 (ăk′tə-nīd′)n. Any of a series of chemically similar, radioactive elements with atomic numbers ranging from 89 (actinium) through 103 (lawrencium). Also called actinoid.
[actin(ium) + -ide.]actinide (ˈæktɪˌnaɪd) n (Elements & Compounds) a member of the actinide series. Also called: actinon [C19: from actino- + -ide]ac•ti•nide (ˈæk təˌnaɪd)
n. any element of the actinide series. [1945; actin (ium) + -ide, on the model of lanthanide] ac·ti·nide (ăk′tə-nīd′) Any of a series of chemically similar metallic elements with atomic numbers ranging from 89 (actinium) to 103 (lawrencium). All of these elements are radioactive, and two of the elements, uranium and plutonium, are used to generate nuclear energy. See Periodic Table.Thesaurus| Noun | 1. |  actinide - any of a series of radioactive elements with atomic numbers 89 through 103actinoid, actinongroup, grouping - any number of entities (members) considered as a unit |
TranslationsEncyclopediaSeeActinidesactinideenUS
Actinide Any of the 15 metallic elements with an atomic number between 89 and 103, which fill the 5f electron shell.
Actinides 89Ac, 90Th, 91Pa, 92U, 93Np, 94Pu, 95Am, 96Cm, 97Bk, 98Cf, 99Es, 100Fm, 101Md, 102No, 103Lractinide (ak′tĭ-nīd″) [ actin- + -ide] Any of the radioactive heavy metals designated on the periodic table of elements with atomic numbers 89–103. The actinides include naturally occurring elements, e.g., actinium and uranium, and artificial elements, e.g., fermium. actinideenUS
Synonyms for actinidenoun any of a series of radioactive elements with atomic numbers 89 through 103SynonymsRelated Words |