Dictionary > English Dictionary > Definition, synonym and antonym of R
Meaning of r by Wiktionary Dictionary


    Etymology 1

    This definition is lacking an etymology or has an incomplete etymology. You can help Wiktionary by giving it a proper etymology .


    • ( UK ) IPA: /ɑː/, X-SAMPA: /A:/
    • ( US ) enPR: är, IPA: /ɑr/, X-SAMPA: /Ar/


    R uppercase ( lowercase r )

    1. The eighteenth letter of the English alphabet, called ar and written in the Latin script .
    See also
    • ( Latin script letters ) letter; Aa,‎ Bb,‎ Cc,‎ Dd,‎ Ee,‎ Ff,‎ Gg,‎ Hh,‎ Ii,‎ Jj,‎ Kk,‎ Ll,‎ Mm,‎ Nn,‎ Oo,‎ Pp,‎ Qq,‎ Rr,‎ Ss,‎ Tt,‎ Uu,‎ Vv,‎ Ww,‎ Xx,‎ Yy,‎ Zz

    R upper case ( lower case r )

    1. The ordinal number eighteenth, derived from this letter of the English alphabet, called ar and written in the Latin script .



    1. ( US politics ) Republican
    2. ( film certification ) restricted
    3. reverse
    4. right ( as opposed to left )
    5. ( handbells ) ring
    6. ( chess ) rook
    7. ( baseball, cricket ) The statistic reporting the number of runs scored by a player
    8. Thursday
      • 1986, Cornell University Courses of Study,[1] page 250:
        Lecs, T R 9:05; lab, M T W R or F 1:25—4:25, or M or W 7:30—10:30 p.m .
      • 2000 August, M.W. Carter, “A Comprehensive Course Timetabling and Student Scheduling System at the University of Waterloo”, in Edmund Burke and Wilhelm Erben ( editors ), Practice and Theory of Automated Timetabling III, Springer ( 2001 ), ISBN 978-3-540-42421-5, page 66:
        8:30 MWF ( 3 x 1 hour ) […] 8:30-10 TR ( 2 x 1.5 hours )
      • 2007, W. Ted Mahavier, “Syllabus for Analysis” ( Lamar University course syllabus ), appendix II.A of Charles A. Coppin et al., The Moore Method: A Pathway to Learner-Centered Instruction, Mathematical Association of America ( 2009 ), ISBN 978-0-88385-185-2, page 201:
        Office Hours: MTWRF: 9:00–11:00, 1:30–3:00 or stop by my office anytime .


    By Wiktionary ( 2010/09/17 00:30 UTC Version )


    • ( UK ) IPA: /ɹɛə/
    • ( US ) IPA: /ɹæɚ/
    • Rhymes: -ɛə( r )

    Etymology 1

    Middle English rare from Latin rarus "loose, spaced apart, thin, infrequent". Replaced native Middle English gesen "rare, scarce" ( from Old English gǣsne ), Middle English seld "rare, uncommon" ( from Old English selden ), and Middle English seldsene "rare, rarely seen, infrequent" ( from Old Norse sialdsēnn ) .


    rare ( comparative rarer, superlative rarest )

    1. Very uncommon; scarce .
    2. ( of cooking, particularly meats ) Cooked very lightly, so the meat is still red ( in the case of steak or beef in the general sense ) .
    3. ( of a gas ) thin; of low density
    Derived terms
    • medium-rare
    Related terms

    Etymology 2

    Variant of rear .


    to rare ( third-person singular simple present rares present participle raring, simple past and past participle rared )

    1. ( US, intransitive ) To rear, rise up, start backwards.
    2. ( US, transitive ) To rear, bring up, raise .


Explanation of r by Wordnet Dictionary


    1. the length of a line segment between the center and circumference of a circle or sphere

    2. the 18th letter of the Roman alphabet

    3. the universal constant in the gas equation: pressure times volume = R times temperature

    4. a unit of radiation exposure

    5. a straight line from the center to the perimeter of a circle ( or from the center to the surface of a sphere )

    Definition of r by GCIDE Dictionary


    1. R ( är ). R, the eighteenth letter of the English alphabet, is a vocal consonant. It is sometimes called a semivowel, and a liquid. See Guide to Pronunciation, §§ 178, 179, and 250-254. “R is the dog's letter and hurreth in the sound.” B. Jonson.

      In words derived from the Greek language the letter h is generally written after r to represent the aspirated sound of the Greek ῥ, but does not affect the pronunciation of the English word, as rhapsody, rhetoric.

      The English letter derives its form from the Greek through the Latin, the Greek letter being derived from the Phœnician, which, it is believed, is ultimately of Egyptian origin. Etymologically, R is most closely related to l, s, and n; as in bandore, mandole; purple, L. purpura; E. chapter, F. chapitre, L. capitulum; E. was, were; hare, G. hase; E. order, F. ordre, L. ordo, ordinis; E. coffer, coffin.

      The three Rs, a jocose expression for reading, riting, and rithmetic, -- the fundamentals of an education.