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will-o'-the-wisp

(Encyclopedia)will-o'-the-wisp, phenomenon known also as ignis fatuus and jack-o'-lantern. It is seen at night as a pale, flickering light over marshland. There is no generally accepted explanation for it; it may r...

gnu

(Encyclopedia)gnu wĭlˈdəbēstˌ [key], large African antelope, genus Connochaetes. Its heavy head and humped shoulders resemble those of a buffalo, while the compact hindquarters are like those of a horse. The g...

dip

(Encyclopedia)dip, in agriculture, method of treating animals (chiefly livestock) infested with skin parasites such as mites, ticks, and warbles. The animal is dipped into or forced to swim through a tank filled wi...

Dessie

(Encyclopedia)Dessie, Dessye, or Dese all: dĕsˈyā [key], town, capital of Wallo prov., central Ethi...

Antiphilus

(Encyclopedia)Antiphilus ăntĭfˈĭləs [key], fl. 4th cent. b.c., Greek painter, of Alexandrian origin. Pliny and Quintilian wrote about his paintings of gryllos, a creature part man, part animal or bird. Pliny f...

Mezozoa

(Encyclopedia)Mezozoa mĕzˈəzōˌə, mēˈzə– [key], name of an animal subkingdom and also of the subkingdom's only phylum. The mezozoans are simple parasitic marine wormlike animals of only 20 to 30 cells, wh...

Leuckart, Karl Georg Friedrich Rudolf

(Encyclopedia)Leuckart, Karl Georg Friedrich Rudolf kärl gāˈôrk frēˈdrĭkh ro͞oˈdôlf loiˈkärt [key], 1823–98, German zoologist, a founder of the science of parasitology. He made important discoveries i...

hippopotamus

(Encyclopedia)hippopotamus, herbivorous, river-living mammal of tropical Africa. The large hippopotamus, Hippopotamus amphibius, has a short-legged, broad body with a tough gray or brown hide. The male stands about...

molting

(Encyclopedia)molting, periodical shedding and renewal of the outer skin, exoskeleton, fur, or feathers of an animal. In most animals the process is triggered by secretions of the thyroid and pituitary glands. Near...

Biosphere 2

(Encyclopedia)Biosphere 2, privately funded ecological research project in which eight people lived sealed in a 3.15-acre (1.28-hectare) structure for two years (Sept. 26, 1991–Sept. 26, 1993). Located in Oracle,...