Columbia Encyclopedia

(Encyclopedia) potato or white potato, common name for a perennial plant (Solanum tuberosum) of the family Solanaceae (nightshade family) and for its swollen underground stem, a tuber, which is one of the most widel...

(Encyclopedia) catfish, common name applied to members of the fish families constituting the order Siluriformes, found in fresh and coastal waters. Catfish are named for the barbels (“whiskers”) around their mou...

(Encyclopedia) Pizarro, Francisco pĭzäˈrō, Span. fränthēsˈkō pēthärˈrō [key], c.1476–1541, Spanish conquistador, conqueror of Peru. Born in Trujillo, he was an illegitimate son of a Spanish gentleman a...

(Encyclopedia) Humboldt, Alexander, Freiherr von hŭmˈbōlt, Ger. älĕksänˈdər frīˈhĕr fən ho͝omˈbôlt [key], 1769–1859, German naturalist, inventor, explorer, and author, the most eminent scientist of ...

(Encyclopedia)  CE5 Black walnut, Juglans nigra walnut, common name for some members of the Juglandaceae, a family of chiefly deciduous, resinous trees characterized by large and aromatic compound leaves. Species...

(Encyclopedia) lake, inland body of standing water occupying a hollow in the earth's surface. The study of lakes and other freshwater basins is known as limnology. Lakes are of particular importance since they act a...

(Encyclopedia)  CE5 Common buttercup, Ranunculus acris buttercup or crowfoot, common name for the Ranunculaceae, a family of chiefly annual or perennial herbs of cool regions of the Northern Hemisphere. Thought to...

(Encyclopedia) Vergil or Virgil (Publius Vergilius Maro) both: vûrˈjil [key], 70 b.c.–19 b.c., Roman poet, b. Andes dist., near Mantua, in Cisalpine Gaul; the spelling Virgil is not found earlier than the 5th ce...

(Encyclopedia)  CE5 Rose pogonia, Pogonia ophioglossoides, a member of the orchid family orchid, popular name for members of the Orchidaceae, a family of perennial herbs widely distributed in both hemispheres. Th...

(Encyclopedia) desert, arid region, usually partly covered by sand, having scanty vegetation or sometimes almost none, and capable of supporting only a limited and specially adapted animal population. The so-called ...