| 单词 | actinium |
| 释义 | actin- or actino- /ak-tin or ak-ti-no/combining formDenoting a ray ORIGIN: Gr aktīs, aktīnos ray actinal /ak-tīˈnəl or akˈti-nəl/ adjective Belonging to the radiating bands on the body of an echinoderm where the tube-like feet are, or to the region of the mouth and tentacles in Anthozoa actīˈnally (or /akˈ/) adverb actinia /-tinˈ/ noun (pl actinˈiae or actinˈias) A sea-anemone (properly, of the genus Actinia) actinˈian noun and adjective actinˈic adjective Of or showing actinism (actinic glass glass that impedes actinic rays; actinic rays those rays (esp ultraviolet) that have a marked chemical action) actinˈically adverb acˈtinide or acˈtinoid noun A member of the actinide series, a group of radioactive metallic elements from atomic number 89 (actinium) to 103 acˈtinism noun The chemical action of radiant energy actinˈium noun A radioactive metallic element (symbol Ac; atomic no 89) found in pitchblende actinobacillus /-bə-silˈəs/ noun (pl actinobacillˈi) A bacillus of the genus of bacteria Actinobacillus, one of which causes actinobacillōˈsis, woody-tongue (qv) actinˈolite noun (Gr lithos a stone) a green amphibole actinomˈeter noun An instrument for measuring the heat-intensity or the actinic effect of light rays actinomorˈphic adjective (Gr morphē form; biology) Radially symmetrical actinomorˈphy noun Actinomyces /-mīˈsēz/ noun (Gr mykēs fungus) the ray fungus, a genus of minute fungi, often pathogenic, with radiating mycelium actinomycosis /-kōˈsis/ noun Lumpy jaw in cattle, etc, and a chronic infection in man, caused by different species of Actinomyces acˈtinon noun Actinium emanation, an isotope of radon actinotherˈapy noun The treatment of disease by exposure to rays, esp ultraviolet rays Actinozoˈa plural noun A former name for the Anthozoa |
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