Columbia Encyclopedia

Search results

420 results found

Bengaluru

(Encyclopedia)Bengaluru băng-gəlôrˈ [key], city (2021 pop. 5,104,047; est. pop. metropolitan area 12,327,000), ...

radar

(Encyclopedia)radar, system or technique for detecting the position, movement, and nature of a remote object by means of radio waves reflected from its surface. Although most radar units use microwave frequencies, ...

hemophilia

(Encyclopedia)hemophilia hēˌməfĭlˈēə, –fēlˈyə [key], genetic disease in which the clotting ability of the blood is impaired and excessive bleeding results. The disease is transmitted through females but...

genetic testing

(Encyclopedia)genetic testing, medical screening for genetic disorders, by examining either a person's DNA directly or a person's biochemistry or chromosomes for indirect evidence. Testing may be done to identify a...

tantalum

(Encyclopedia)tantalum tănˈtələm [key] [from Tantalus], metallic chemical element; symbol Ta; at. no. 73; at. wt. 180.94788; m.p. 2,996℃; b.p. 5,400±100℃; sp. gr. 16.65 at 20℃; valence +2, +3, +4, or +5....

hemorrhagic fever

(Encyclopedia)hemorrhagic fever hĕmˌərăjˈĭk [key], any of a group of viral diseases characterized by sudden onset, muscle and joint pain, fever, bleeding, and shock from loss of blood. Bleeding occurs in the ...

Rodin, Auguste

(Encyclopedia)Rodin, Auguste ōgüstˈ rōdăNˈ [key], 1840–1917, French sculptor, b. Paris. He began his art study at 14 in the Petite École and in the school of Antoine Barye, earning his living by working fo...

rickettsia

(Encyclopedia)rickettsia rĭkĕtˈsēə [key], any of an order (Rickettsiales) of very small microorganisms, many disease-causing, that live in vertebrates and are transmitted by bloodsucking parasitic arthropods s...

Marietta

(Encyclopedia)Marietta mârēĕtˈə [key]. 1 City (1990 pop. 44,129), seat of Cobb co., NW Ga.; inc. 1834. The principal manufactures of this suburb of Atlanta are related to aircraft production. At the foot of Ke...

Auburn

(Encyclopedia)Auburn ôˈbərn [key]. 1 City (2020 pop. 76,143), Lee co., E Ala.; inc. 1839. The city's economy centers around Auburn Univ.; there is some manufacturing. 2 City (2...