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neodymium

(Encyclopedia)neodymium nēˌōdĭmˈēəm [key], metallic chemical element; symbol Nd; at. no. 60; at. wt. 144.242; m.p. about 1,021℃; b.p. about 3,068℃; sp. gr. 7.004 at 20℃; valence +3. Neodymium is a lust...

Lamartine, Alphonse Marie Louis de

(Encyclopedia)Lamartine, Alphonse Marie Louis de älfôNsˈ märēˈ lwē də lämärtēnˈ [key], 1790–1869, French poet, novelist, and statesman. After a trip to Italy and a brief period in the army, Lamartine ...

machine tool

(Encyclopedia)machine tool, power-operated tool used for finishing or shaping metal parts, especially parts of other machines. An establishment that is equipped with such tools and specializes in such work is known...

Marburg virus disease

(Encyclopedia)Marburg virus disease, formerly known as Marburg virus hemorrhagic fever, disease caused by infection with a Marburg virus, a filovirus that belongs to a family (Filoviridae) of RNA viruses that also ...

Assassin

(Encyclopedia)Assassin əsăsˈĭn [key], European name for the member of a secret order of the Ismaili sect of Islam. They are known as Nizaris after Nizar ibn al-Mustansir, whom they supported as caliph; the Euro...

ruthenium

(Encyclopedia)ruthenium ro͞othēˈnēəm [key], metallic chemical element; symbol Ru; at. no. 44; at. wt. 101.07; m.p. about 2,310℃; b.p. about 3,900℃; sp. gr. 12.41 at 20℃; valence commonly +2, +3, +4, +6, ...

Asia Minor

(Encyclopedia)Asia Minor, great peninsula, c.250,000 sq mi (647,500 sq km), extreme W Asia, generally coterminous with Asian Turkey, also called Anatolia. It is washed by the Black Sea in the north, the Mediterrane...

Semite

(Encyclopedia)Semite sĕmˈīt, sēˈmīt [key], originally one of a people believed to be descended from Shem, son of Noah. Later the term came to include the following peoples: Arabs; the Akkadians of ancient Bab...

Crimean-Congo hemorrhagic fever

(Encyclopedia)Crimean-Congo hemorrhagic fever, acute, sometimes fatal disease endemic in many parts of Eurasia and Africa, caused by a tick-borne virus. The virus, an RNA virus (Nairovirus) of the Bunyaviridae fami...

quarantine

(Encyclopedia)quarantine kwŏrˈəntēn [key], isolation of persons, animals, places, and effects that carry or are suspected of harboring communicable disease. The term originally referred to the 40 days of offsho...