Columbia Encyclopedia

Search results

500 results found

determinant

(Encyclopedia)determinant, a polynomial expression that is inherent in the entries of a square matrix. The size n of the square matrix, as determined from the number of entries in any row or column, is called the o...

Freemasonry

(Encyclopedia)Freemasonry, teachings and practices of the secret fraternal order officially known as the Free and Accepted Masons, or Ancient Free and Accepted Masons. Because of its identification with 19th-cent...

leaf insect

(Encyclopedia)leaf insect, common name given to herbivorous insects of leaflike appearance forming a single family in the order Phasmida. Leaf insects are green and have extremely flattened, irregularly shaped bodi...

Knights of Calatrava

(Encyclopedia)Knights of Calatrava käläträˈvä [key], Spain's oldest military order, whose original seat was the now ruined fortress of Calatrava la Vieja in Ciudad Real prov., central Spain. Founded (1158) by ...

Lycopodiophyta

(Encyclopedia)Lycopodiophyta līˌkōpōˌdēŏfˈətə [key], division of the plant kingdom consisting of the organisms commonly called club mosses and quillworts. As in other vascular plants, the sporophyte, or s...

matrix

(Encyclopedia)matrix, in mathematics, a rectangular array of elements (e.g., numbers) considered as a single entity. A matrix is distinguished by the number of rows and columns it contains. The matrix CE5 is a 2...

Gavazzi, Alessandro

(Encyclopedia)Gavazzi, Alessandro älĕs-sänˈdrō gävätˈtsē [key], 1809–89, Italian preacher and patriot. A Barnabite monk, he left the order in 1848. His liberal ideas and disillusionment with the social o...

Carmelites

(Encyclopedia)Carmelites kärˈməlīts [key], Roman Catholic order of mendicant friars. Originally a group of hermits, apparently European, living on Mt. Carmel in Palestine, their supervision was undertaken (c.11...

Royce, Josiah

(Encyclopedia)Royce, Josiah, 1855–1916, American philosopher, b. California, grad. Univ. of California, 1873. After studying in Germany and at Johns Hopkins, he returned to California to teach (1878–82). From 1...

rust, in botany

(Encyclopedia)rust, in botany, name for various parasitic fungi of the order Uredinales and for the diseases of plants that they cause. Rusts form reddish patches of spores on the host plant. About 7,000 species ar...
 

Browse by Subject