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field, in algebra

(Encyclopedia)field, in algebra, set of elements (usually numbers) that may be combined under the operations of addition and multiplication so that it constitutes an additive group, the nonzero elements form a mult...

Vitu Islands

(Encyclopedia)Vitu Islands vēˈto͞o [key], volcanic group, 37 sq mi (96 sq km), in the Bismarck Archipelago, part of Papua New Guinea. Garove and Unea are the largest islands. The group is the chief copra center ...

radical, in chemistry

(Encyclopedia)radical, in chemistry, group of atoms that are joined together in some particular spatial structure and that take part in most chemical reactions as a single unit. Important inorganic radicals include...

blood groups

(Encyclopedia)blood groups, differentiation of blood by type, classified according to immunological (antigenic) properties, which are determined by specific substances on the surface of red blood cells. Blood group...

G8

(Encyclopedia)G8: see Group of Eight under Group of Seven. ...

Muslim Brotherhood

(Encyclopedia)Muslim Brotherhood, officially Jamiat al-Ikhwan al-Muslimun [Arab.,=Society of Muslim Brothers], religious and political organization founded (1928) in Egypt by Hasan al-Banna. Early opposed to secula...

Boko Haram

(Encyclopedia)Boko Haram [Western education is sinful], Nigerian Islamic fundamentalist militia, officially Jama'atu Ahlis Sunna Lidda'awati Wal-Jihad [people committed to the propagation of the Prophet's teaching...

G20

(Encyclopedia)G20: see Group of Twenty under Group of Seven. ...

Tanimbar Islands

(Encyclopedia)Tanimbar Islands tĕnĭmˈbär, tə– [key], group of about 30 islands, c.2,100 sq mi (5,440 sq km), E Indonesia, in the Banda Sea, between the Aru Islands and Timor, in the Moluccas. The largest of ...

onomatopoeia

(Encyclopedia)onomatopoeia ŏnˌəmătˌəpēˈə [key] [Gr.,=word-making], in language, the representation of a sound by an imitation thereof; e.g., the cat mews. Poets often convey the meaning of a verse through ...