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Tiber

(Encyclopedia) TiberTibertīˈbər [key], Ital. Tevere, Latin Tiberis, river, 251 mi (404 km) long, rising in the Etruscan Apennines, central Italy. It flows generally S across Tuscany, Umbria, and N…

Biobío

(Encyclopedia) BiobíoBiobíobēōbēˈō [key] or Bío-BíoBío-Bíobēˈō– [key], river, c.240 mi (390 km) long, rising in the Andes of central Chile and flowing NW to the Pacific Ocean near Concepción. It…

Pentagon History

World's largest office building has distinctive past by David Johnson The Defense Post Office handles 1,200,000 pieces of mail each month. Related Links American…

arm

(Encyclopedia) arm, upper limb in humans. Three long bones form the framework of the arm: the humerus of the upper arm, and the radius (outer bone) and ulna (inner bone) of the forearm. The radius…

Hounslow

(Encyclopedia) Hounslow Hounslow hounzˈlō [key], outer borough of Greater London, SE England, on the Thames River…

hearing aid

(Encyclopedia) hearing aid, device used in some forms of deafness to amplify sound before it reaches the auditory organs. Modern hearing aids are electronic. They contain a tiny receiver and a…

Samoyed

(Encyclopedia) SamoyedSamoyedsămˈəyĕd [key], breed of hardy, muscular working dog developed in N Siberia many centuries ago. It stands from 19 to 23.5 in. (48.3–59.7 cm) high at the shoulder and…

slipped disc

(Encyclopedia) slipped disc, rupture or herniation of an intervertebral disc. These discs separate and cushion the vertebrae, the segments of the spinal column. They are composed of an outer rim of…

‘Oumuamua

(Encyclopedia) ‘Oumuamua‘Oumuamuaōm&oomacr;ˈəm&oomacr;ˈə [key], officially 1I/2017 U1 (‘Oumuamua), interstellar object, the first to be discovered in the solar system. Highly variable in…