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Indus valley civilization

(Encyclopedia)Indus valley civilization, ancient civilization that arose about 3300 b.c. in the valley of the Indus River and its tributaries, in the northwestern portion of the Indian subcontinent, i.e., present-d...

buttress

(Encyclopedia)CE5 Types of buttresses buttress, mass of masonry built against a wall to strengthen it. It is especially necessary when a vault or an arch places a heavy load or thrust on one part of a wall. In t...

sugarcane

(Encyclopedia)sugarcane, tall tropical perennials (species of Saccharum, chiefly S. officinarum) of the family Poaceae (grass family), probably cultivated in their native Asia from prehistoric times. Sugarcane some...

sonar

(Encyclopedia)sonar sōˈnär [key], device used underwater for locating submerged objects and for submarine communication by means of sound waves. The term sonar is an acronym for sound navigation ranging. The mai...

propeller

(Encyclopedia)propeller, device consisting of a hub with one or more blades that propels a craft to which it is attached by rotating its blades in a fluid such as air or water. In the latter part of the 1830s the S...

rain

(Encyclopedia)rain, precipitation in liquid form. It consists of drops of water falling from clouds; if the drops are very small, they are collectively termed drizzle. Rain plays a key role in the hydrologic, or wa...

Jiangxi

(Encyclopedia)Jiangxi kyăngˈsēˈ, jyängˈ– [key], province (2010 pop. 44,567,475), c.66,000 sq mi (170,940 sq km), SE China. Nanchang is the capital. The largely hilly and mountainous surface is drained by ma...

Know-Nothing movement

(Encyclopedia)Know-Nothing movement, in U.S. history. The increasing rate of immigration in the 1840s encouraged nativism. In Eastern cities where Roman Catholic immigrants especially had concentrated and were welc...

walrus

(Encyclopedia)walrus, marine mammal, Odobenus rosmarus, found in Arctic seas. Largest of the fin-footed mammals, or pinnipeds (see seal), the walrus is also distinguished by its long tusks and by cheek pads bearing...

Agnelli

(Encyclopedia)Agnelli än-yĕlˈlē [key], family of Italian industrialists. Giovanni Agnelli, 1866–1945, served as a cavalry officer until 1892. One of the founders (1899) of Fiat (Fabbrica Italiana Automobili T...