Množina: burs

Seed vessel having hooks or prickles; SYN. burr.
Or burr; In botany, a type of “false fruit” or pseudocarp, surrounded by numerous hooks; for instance, that of burdock Arctium, where the hooks are formed from bracts surrounding the flowerhead. Burs catch in the feathers or fur of passing animals, and thus may be dispersed over considerable distances.
The term is also used to include any type of fruit or seed with hooks, such as that of sandbur Cenchrus, a grass, and white avens Geum canadese.

Množina: burs

ETYM Old Eng. burre burdock; cf. Dan. borre, OSw. borra, burdock, thistle; perh. akin to Eng. bristle (burr- for burz-), or perh. to French bourre hair, wool, stuff.
1. Small bit used in dentistry or surgery; SYN. burr.
2. A thin ridge or area of roughness produced in cutting or shaping metal.
3. An irregular rounded mass; especially; a tree burl.

To remove the burrs from; SYN. burr.

Množina: bur in the throats

Množina: bur marigolds

Any of several plants of the genus Bidens having yellow flowers and prickly fruits that cling to fur and clothing; SYN. burr marigold, beggar-ticks, beggar's-ticks, sticktight.

Množina: bur oaks

Medium to large deciduous oak of central and eastern North America with ovoid acorns deeply immersed in large fringed cups; yields tough close-grained wood; SYN. burr oak, mossy-cup oak, mossycup oak, Quercus macrocarpa.
A usually large oak (Quercus macrocarpa) of eastern North America having oval acorns enclosed in a fringed cap and tough close-grained wood.

Množina: bur reeds

Marsh plant having elongated linear leaves and round prickly fruit.
Any of a genus (Sparganium of the family Sparganiaceae) of herbaceous plants with globose fruits resembling burs.

Množina: bur-weeds

Any of various plants (as a cocklebur or burdock) having burry fruit.

Množina: Buras

A Chadic language spoken south of Lake Chad; Also called: Pabir.

(1861-1931)
Italian mathematician who worked in the field of vector analysis, especially on the linear transformations of vectors.
He also framed the Burali-Forte paradox 1897, which contradicted the notion that mathematics (or at least its foundations) could be adequately expressed in purely logical terms.
Burali-Forte was born in Arezzo, Tuscany, studied at Pisa, and became a professor at the Academia Militare di Artiglieria e Genio in Turin.
Burali-Forte’s paradox states: “To every class of ordinal numbers there corresponds an ordinal number which is greater than any element of the class.” In 1902 English philosopher Bertrand Russell demonstrated that this contradiction was of a fundamental logical character and could not be overcome by minor changes in the theory of infinite ordinal numbers.
Much of Burali-Forte's work in the field of vector analysis was done in collaboration with Roberto Marcolongo. In 1904 they published a comprehensive analysis of existing systems of vector notation, producing 1909 their own proposals for a unified system. Burali-Forte simplified the foundations of vector analysis by the introduction of the notion of the derivative of a vector with respect to a point.
In 1912–13 Burali-Forte published more volumes on linear transformations and demonstrated their application to such things as the theory of mechanics of continuous bodies, hydrodynamics, optics, and some problems of mechanics. His last contribution, a paper on differential projective geometry, was finished 1930.

Množina: burans

Sudden violent storm of Central Asia.

Množina: Buras-Triumphs

Unincorporated community in Louisiana (USA).

Množina: burbs

Suburb.

(c. 1567-1619) English actor. He is thought to have been Shakespeare’s original Hamlet, Othello, and Lear. He also appeared in first productions of works by Ben Jonson, Thomas Kyd, and John Webster. His father James Burbage (c. 1530–1597) built the first English playhouse, known as “the Theatre”; his brother Cuthbert Burbage (c. 1566–1636) built the original Globe Theatre 1599 in London.

Luther 1849-1926 American horticulturist