Noun

(wikipedia algebra)

(uncountable, medicine, historical, rare) The surgical treatment of a dislocated or fractured bone. Also (countable): a dislocation or fracture.

* {{quote-book, year= a1420

, year_published= 1894 , author= The British Museum Additional MS, 12,056 , by= (Lanfranc of Milan) , title= Lanfranc's "Science of cirurgie." , url= http://books.google.com/books?id=6XktAAAAYAAJ&pg=PA63 , original= , chapter= Wounds complicated by the Dislocation of a Bone , section= , isbn= 1163911380 , edition= , publisher= K. Paul, Trench, Trübner & Co , location= London , editor= Robert von Fleischhacker , volume= , page= 63 , passage= Ne take noon hede to brynge togidere þe parties of þe boon þat is to-broken or dislocate, til viij. daies ben goon in þe wyntir, & v. in þe somer; for þanne it schal make quytture, and be sikir from swellynge; & þanne brynge togidere þe brynkis eiþer þe disiuncture after þe techynge þat schal be seid in þe chapitle of algebra . }}

* {{quote-book, year= 1987

, year_published= , author= (John Newsome Crossley) , by= , title= The emergence of number , url= http://books.google.com/books?id=rc6atSk1d4IC&pg=PA65 , original= , chapter= Latency , section= Al-Khwarizwi , isbn= 9971504146 , edition= , publisher= World Scientific , location= Singapore , editor= , volume= , page= 65 , passage= Algebra'' is used today by surgeons to mean ''bone-setting , i.e. the restoration of bones, and the idea of restoration is present in the mathematical context, too. }}

(uncountable, mathematics) A system for computation using letters or other symbols to represent numbers, with rules for manipulating these symbols.

* {{quote-book, year= 1551

, year_published= 1888 , author= , by= , title= A New English Dictionary on Historical Principles: Founded Mainly on the Materials Collected by the Philological Society. , url= http://books.google.com/books?id=JmpXAAAAYAAJ&pg=PA217 , original= , chapter= , section= Part 1 , isbn= , edition= , publisher= Clarendon Press , location= Oxford , editor= , volume= 1 , page= 217 , passage= Also the rule of false position, with dyuers examples not onely vulgar, but some appertaynyng to the rule of Algeber . }}

(uncountable, mathematics) The study of algebraic structures.

(countable, mathematics) A universal algebra.

(countable, algebra) An algebraic structure consisting of a module of a commutative ring along with an additional binary operation that is bilinear.

* {{quote-book, year= 1854

, year_published= , author= (George Boole) , by= , title= , url= http://books.google.com/books?id=YNAtAAAAYAAJ&pg=PA37 , original= , chapter= Signs and their Laws , section= , isbn= , edition= , publisher= Walton and Maberly , location= London , editor= , volume= , page= 37 , passage= Let us conceive, then, of an Algebra in which the symbols x'', ''y'', ''z , &c. admit indifferently of the values 0 and 1, and of these values alone. }}

(countable, set theory, analysis) A collection of subsets of a given set, such that this collection contains the empty set, and the collection is closed under unions and complements (and thereby also under intersections and differences).

(countable, mathematics) One of several other types of mathematical structure.

(figurative) A system or process, that is like algebra by substituting one thing for another, or in using signs, symbols, etc., to represent concepts or ideas.

* {{quote-book, year= 1663

, year_published= 1871 , author= William Clark , by= , title= Marciano; or, The discovery: A tragi-comedy , url= http://books.google.com/books?id=I18JAAAAQAAJ&pg=PA13 , original= , chapter= , section= , isbn= 1446062937 , edition= , publisher= Reprinted for Private Circulation , location= Edinburgh , editor= William Hugh Logan , volume= , page= 13 , passage= Fly ! Fly ! avaunt with that base cowardly gibbrish ; That Algebra of honour ; which had never Been nam'd, if all had equal courage—what? }}

Noun

(en-noun)

The study of electrical energy; the branch of science dealing with such phenomena.

* 2011 , Jon Henley, The Guardian , 29 Mar 2011:

How does it work, though? It's based on the observation made some 200 years ago that electricity can change the shape of flames.

Electric power/energy as used in homes etc., supplied by power stations or generators.

* 2000 , James Meek, Home-made answer to generating electricity harks back to the past'', ''The Guardian :

Householders could one day be producing as much electricity as all the country's nuclear power stations combined, thanks to the revolutionary application of a device developed in the early 19th century.

* {{quote-magazine, date=2013-07-20, volume=408, issue=8845, magazine=(The Economist)

, title= Out of the gloom , passage=[Rural solar plant] schemes are of little help to industry or other heavy users of electricity . Nor is solar power yet as cheap as the grid. For all that, the rapid arrival of electric light to Indian villages is long overdue. When the national grid suffers its next huge outage, as it did in July 2012 when hundreds of millions were left in the dark, look for specks of light in the villages.}}

Electric charge, or particles carrying such charge

* 1747 , (Benjamin Franklin), letter, 28 Jul 1747:

Restoring the equilibrium in the bottle does not at all affect the Electricity in the man.

* 1837 , William Leithead, Electricity , p. 5:

Attraction, then, is the first phenomenon that arrests our attention, and it is one that is constantly attendant on excitation. It is therefore considered a sure indicator of the presence of electricity in an active state, and forms the basis of all its tests.

* 1873 , (James Clerk Maxwell), :

We may express all these results in a concise and consistent manner by describing an electrified body as charged'' with a certain ''quantity of electricity'' , which we may denote by ''e .

A feeling of excitement; a thrill.

(label) A property of amber and certain other nonconducting substances ("electricks") to attract lightweight material when rubbed, or the cause of this property; now understood to be an imbalance of electric charge.

* 1646 , (Sir Thomas Browne), Pseudodoxia Epidemica , 1st edition, p. 51:

The concretion of Ice will not endure a dry attrition without liquation; for if it be rubbed long with a cloth, it melteth. But Crystal will calefie unto electricity ; that is, a power to attract strawes and light bodies, and convert the needle freely placed.