Three Rs

Three Rs

Three Rs (pronounced "three ars"), can refer to:
* Animal testing, an abbreviation for, "reduce, replace, refine"
* The three Rs, a widely-used abbreviation for the basic elements of a primary school curriculum: "reading, ’riting (writing), and ’rithmetic (arithmetic)"
* The waste hierarchy, summed up in the slogan "reduce, reuse, recycle" - reduce consumption, reuse manufactured products, and recycle raw materials
* Franklin Delano Roosevelt proposed a plan to bring about the recovery of the United States from the effects of the Great Depression: "Relief, Recovery, and Reform"
* Three Rivers Stadium, a multipurpose sports stadium and event facility located in Pittsburgh, Pennsylvania, USA was demolished in 2001
* 3R a business abbreviation that is used to determine the three primary reasons that a business might purchase a product or service in order to satisfy demands such as; Revenue, cost Reduction, Regulations
* Reason, Respect, and Responsibility - A key tenet of the Hartland Consolidated Schools in Hartland, MI


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  • Three — (thr[=e]), a. [OE. [thorn]re, [thorn]reo, [thorn]ri, AS. [thorn]r[=i], masc., [thorn]re[ o], fem. and neut.; akin to OFries. thre, OS. thria, threa, D. drie, G. drei, OHG. dr[=i], Icel. [thorn]r[=i]r, Dan. & Sw. tre, Goth. [thorn]reis, Lith. trys …   The Collaborative International Dictionary of English

  • three — /three/, n. 1. a cardinal number, 2 plus 1. 2. a symbol for this number, as 3 or III. 3. a set of this many persons or things. 4. a playing card, die face, or half of a domino face with three pips. adj. 5. amounting to three in number. 6. three… …   Universalium

  • three — O.E. þreo, fem. and neut. (masc. þri, þrie), from P.Gmc. *thrijiz (Cf. O.Fris. thre, M.Du., Du. drie, O.H.G. dri, Ger. drei, O.N. þrir, Dan. tre), from PIE *trejes (Cf. Skt. trayas, Avestan thri, Gk. treis …   Etymology dictionary

  • three — S1 [θri:] number [: Old English; Origin: thrie, threo] 1.) the number 3 ▪ They ve won their last three games. ▪ We d better go. It s almost three (=three o clock) . ▪ My little sister s only three (=three years old) . 2.) in threes in groups of… …   Dictionary of contemporary English

  • three — three; three·ling; three·pence; three·pen·ny; three·pen·ny·worth; three·fold; three·some; …   English syllables

  • Three — Three, n. 1. The number greater by a unit than two; three units or objects. [1913 Webster] 2. A symbol representing three units, as 3 or iii. [1913 Webster] {Rule of three}. (Arith.) See under {Rule}, n. [1913 Webster] [1913 Webster] …   The Collaborative International Dictionary of English

  • three-D — adjective a three D movie, picture, etc. looks as if it has height, depth, and width: a three D backdrop effect ╾ ,three D noun uncount: They re showing the film in three D …   Usage of the words and phrases in modern English

  • three — [thrē] adj. [ME < OE threo, thrie, akin to Ger drei < IE base * trei > L tres, Gr treis, Sans tri] totaling one more than two n. 1. the cardinal number between two and four; 3; III 2. any group of three people or things 3. something… …   English World dictionary

  • three-D — three D, 3 D [ˌθri: ˈdi:] adj a three D film or picture is made so that it appears to be three dimensional >three D n [U] ▪ a film in 3 D …   Dictionary of contemporary English

  • three — ► CARDINAL NUMBER ▪ one more than two; 3. (Roman numeral: iii or III.) ● three parts Cf. ↑three parts DERIVATIVES threefold adjective & adverb. ORIGIN Old English …   English terms dictionary

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