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rutherfordium

(Encyclopedia)rutherfordium rŭᵺˌərfôrˈdēəm [key], artificially produced radioactive chemical element; symbol Rf; at. no. 104; mass number of most stable isotope 265; m.p., b.p., and sp. gr. unknown; valenc...

oganesson

(Encyclopedia)oganesson ōˈgənĕsˌən [key], artificially produced radioactive chemical element; symbol Og; at. no. 118; mass number of most stable isotope 294; m.p., b.p., sp. gr., and valence unknown. Situated...

dubnium

(Encyclopedia)dubnium do͞obˈnēəm [key], artificially produced radioactive chemical element; symbol Db; at. no. 105; mass number of most stable isotope 268; m.p., b.p., and sp. gr. unknown; valence +5. Situated ...

steel

(Encyclopedia)steel, alloy of iron, carbon, and small proportions of other elements. Iron contains impurities in the form of silicon, phosphorus, sulfur, and manganese; steelmaking involves the removal of these imp...

missal

(Encyclopedia)missal [Lat.,=of the mass], in the Roman Catholic Church, liturgical book containing all directions and texts necessary for the performance of Mass throughout the year. The Roman Missal (Missale Roman...

Mori Ogai

(Encyclopedia)Mori Ogai mōˈrē ōˈgäē [key], 1862–1922, Japanese army physician, medical researcher, literary critic, novelist, translator, scholar, and playwright, he is now primarily remembered for his fic...

Thoma, Ludwig

(Encyclopedia)Thoma, Ludwig lo͝otˈvĭkh [key], 1867–1921, German novelist, dramatist, and poet. Thoma satirized Bavarian rural and small-town life. His serious peasant novels Andreas Vöst (1905), Der Wittiber ...

Corbière, Tristan

(Encyclopedia)Corbière, Tristan trēstäNˈ kôrbyĕrˈ [key], 1845–75, French poet, born Édouard Joachim Corbière. He spent most of his life on the coast of Brittany, living a Bohemian existence and suffering...

Al-Farghani

(Encyclopedia)Al-Farghani ălfrəgāˈnəs [key], d. after 861, Arab astronomer. Al-Farghani was born in Farghana, Transoxania (present-day Fergana, Uzbekistan), and died in Egypt. His most important work, written ...

Ficino, Marsilio

(Encyclopedia)Ficino, Marsilio märsēˈlyō fēchēˈnō [key], 1433–99, Italian philosopher. Under the patronage of Cosimo de' Medici, Ficino became the most influential exponent of Platonism in Italy in the 15...