Columbia Encyclopedia

Search results

298 results found

Hercules, in astronomy

(Encyclopedia)Hercules hûrˈkyəlēzˌ [key], in astronomy, northern constellation located between Lyra and Corona Borealis. It is traditionally depicted as the hero Hercules in a kneeling position. There are no v...

gramicidin

(Encyclopedia)gramicidin grămˌĭsīdˈən [key], antibiotic obtained from the bacterial species Bacillus brevis, which is found in soil. Gramicidin is particularly effective against gram-positive bacteria (see Gr...

Centaurus

(Encyclopedia)Centaurus sĕntôrˈəs [key], southern constellation located N and E of Crux, the Southern Cross. It is known especially for its bright stars Alpha Centauri and Hadar. It also contains Centaurus A, a...

Strand, Mark

(Encyclopedia)Strand, Mark, 1934–2014, American poet, b. Prince Edward Island, Canada, grad. Antioch College (B.A., 1957), Yale (B.F.A., 1959), Iowa Writers' Workshop (M.A., 1962). Meditative and death-haunted, h...

Strickland, Donna Theo

(Encyclopedia)Strickland, Donna Theo, 1959–, Canadian physicist, Ph.D. Univ. of Rochester, New York, 1989. Strickland held research positions at the National Research Council of Canada in Ottawa from 1988 to 1991...

tubercle

(Encyclopedia)tubercle to͞oˈbərkyo͞olˌ [key] [Lat.,=little swelling], small, usually solid, nodule or prominence. In anatomy the term is applied to natural prominences in certain muscles, to nerve nuclei of th...

reading, mental process

(Encyclopedia)reading, process of mentally interpreting written symbols. Facility in reading is an essential factor in educational progress, and instruction in this basic skill is a primary purpose of elementary ed...

star cluster

(Encyclopedia)star cluster, a group of stars near each other in space and resembling each other in certain characteristics that suggest a common origin for the group. Stars in the same cluster move at the same rate...

albino

(Encyclopedia)albino ălbīˈnō [key] [Port.,=white], animal or plant lacking normal pigmentation. The absence of pigment is observed in the body covering (skin, hair, and feathers) and in the iris of the eye. The...

Copenhagen, battle of

(Encyclopedia)Copenhagen, battle of, 1801, an important incident of the French Revolutionary Wars. In Dec., 1800, Denmark joined Russia, Sweden, and Prussia in declaring the armed neutrality of the northern powers ...