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Tatlin, Vladimir

(Encyclopedia)Tatlin, Vladimir tätˈlyĭn [key], 1885–1953, Russian painter and sculptor, known as the Father of Russian constructivism. After graduating (1910) from the Moscow Academy of Fine Arts, he traveled ...

Cotopaxi

(Encyclopedia)Cotopaxi kōtōpăkˈsē [key], active volcano, 19,347 ft (5,897 m) high, N central Ecuador. A symmetrical snowcapped cone in the Andes, it is one of the highest volcanoes in the world. It is continuo...

Darwin, Sir Francis

(Encyclopedia)Darwin, Sir Francis, 1848–1925, English botanist, assistant to his father, Charles Robert Darwin. He lectured in botany at Cambridge and was foreign secretary of the Royal Society and president of t...

mute

(Encyclopedia)mute myo͞ot [key], in music, device designed to diminish uniformly the loudness of a musical instrument. For example, a trumpet mute is cone-shaped and fits into the instrument's bell, and a violin m...

Sangay

(Encyclopedia)Sangay, active volcano, 17,343 ft (5,286 m) high, S central Ecuador. A symmetrical, glacier-capped, cone-shaped stratovolcano at the edge of the Amazon rainforest, it is the most active volcano in Ecu...

Lombok

(Encyclopedia)Lombok lŏmbŏkˈ [key], island (1990 pop. 2,403,025), c.1,825 sq mi (4,725 sq km), E Indonesia, one of the Lesser Sundas, separated from Bali by the Strait of Lombok. Mataram, with the port of Ampena...

cortex

(Encyclopedia)cortex, in botany, term generally applied to the outer soft tissues of the leaves, stems, and roots of plants. Cortical cells of the leaves and outer layers of nonwoody stems contain chloroplasts, and...

Pavlof Volcano

(Encyclopedia)Pavlof Volcano, active volcano, 8,177 ft (2,493 m) high, W Alaska Peninsula, SW Alaska, on the W shore of Pavlof Bay. It and its neighboring twin volcano, Pavlof Sister, 7,028 ft (2,142 m) high, are l...

pollination

(Encyclopedia)pollination, transfer of pollen from the male reproductive organ (stamen or staminate cone) to the female reproductive organ (pistil or pistillate cone) of the same or of another flower or cone. Polli...

ginkgo

(Encyclopedia)ginkgo gĭngˈkō [key] or maidenhair tree, tall, slender, picturesque deciduous tree (Ginkgo biloba) with fan-shaped leaves. The ginkgo is native to E China, where it was revered by Buddhist monks an...