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Horn of Africa

(Encyclopedia)Horn of Africa, peninsula, NE Africa, opposite the S Arabia Peninsula. Also known as the Somali Peninsula, it encompasses Somalia and E Ethiopia and is the easternmost extension of the continent, sepa...

Hildebrand, Lay of

(Encyclopedia)Hildebrand, Lay of, fragment of an epic in mixed Low and Old High German composed c.800 in the monastery of Fulda. Hildebrand, armorer of Dietrich of Bern (Theodoric the Great), returns home after man...

heat of combustion

(Encyclopedia)heat of combustion, heat released during combustion. In particular, it is the amount of heat released when a given amount (usually 1 mole) of a combustible pure substance is burned to form incombustib...

Heliodorus of Emesa

(Encyclopedia)Heliodorus of Emesa ĕmˈəsə [key], fl. 3d cent., Syrian Greek writer. He wrote the romance Aethiopica, one of the oldest and best of surviving Greek romances. Little is known of his life except tha...

Hermas, Shepherd of

(Encyclopedia)Hermas, Shepherd of herˈməs [key], Christian apocalyptic work, composed in Rome c.a.d. 139–a.d. 155. It is a collection of revelations given to Hermas, a devout Christian, by an angel (Shepherd) a...

Heron of Alexandria

(Encyclopedia)Heron of Alexandria hērˈŏn [key] or Hero, mathematician and inventor. The dates of his birth and death are unknown; conjecture places them between the 2d cent. b.c. and the 3d cent. a.d. He is beli...

Hesychius of Alexandria

(Encyclopedia)Hesychius of Alexandria hēsĭkˈēəs [key], fl. 5th cent.?, Alexandrian grammarian. Hesychius is known as the compiler of an invaluable lexicon, a glossary of unusual words and expressions occurring...

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