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  • R ... rabbit berry
  • rabbit hair ... racerunner
  • Races of Europe: A Sociological Study, The ... Radarsat-1
  • Radasbona ... radiation laws
  • radiation measurement ... radio navigation
  • Radio New Zealand Ltd. ... radium-228
  • radius ... raft foundation
  • Raft of the Medusa, The ... Raḥmah ibn Jābir al-Jalāhimah
  • Raḥmah, Jabal al- ... rain forest
  • rain frog ... raised bread
  • Raised Chair with Geese ... rajjuka
  • Rajk, László ... Ralov, Kirsten Laura Gnatt
  • raloxifene ... Ramanantsoa, Gabriel
  • Ramanatha ... Ramessesnakht
  • Ramesseum ... Ramphastos
  • Ramphastos dicolorus ... Rance River
  • Rancé, Armand-Jean Le Bouthillier de ... rangaku
  • Rangamati ... Ranoji Sindhia
  • Ranong ... Raphia
  • Raphia farinifera ... Rasbora
  • rasbora ... Rassemblement du Peuple Togolais
  • Rassemblement National et Démocratique ... Rathore, Rajyavardhan Singh
  • Rathouisiidae ... Rattus osgoodi
  • Rattus rattus ... Raw and the Cooked, The
  • raw coal ... Raymie Nightingale
  • Raymond ... RCA Building
  • RCA Corporation ... reactor
  • reactor ... real presence
  • real property ... Rebagliati, Ross
  • Rebaptizer ... recessiveness
  • Rechabite ... recombinant DNA
  • recombinant human antithrombin ... rectilinear motion
  • Recto, Claro Mayo ... red calla lily
  • Red Caps ... red lead
  • red lechwe ... Red Sorghum Family
  • Red Sox ... red-to-yellow soil
  • red-wattled lapwing ... redness trope
  • Redoble por Rancas ... reed organ
  • reed organ ... Reeves, Bass
  • Reeves, H. A. ... reflux
  • reflux ... regal stop
  • Regalecus glesne ... Region of the Rapids
  • Region of Unlikeness ... regular delay cap
  • Regular Division of the Plane ... Reichenbach, Georg von
  • Reichenbach, Hans ... reindeer sacrifice
  • Reindl, Lujza ... Rejang language
  • Rejected Addresses; or, The New Theatrum Poetarum ... Relenza
  • Reles, Abe ... religious movement
  • religious music ... remembrancer
  • Rememory ... renal hilus
  • renal hypertension ... renin-angiotensin system
  • Renison Bell ... repeater jamming
  • Repeating Island, The ... Repristination Theology
  • reprocessed wool ... Republican Peasants’ Nation Party
  • Republican People’s Party ... Research and Analysis Wing
  • Research and Coordination in Acoustics/Music, Institute for ... residual landform
  • residual loss ... Resor, Stanley
  • resorcinol ... Reston, James
  • Reston, James Barrett ... Réthymno
  • Réti, Richard ... Rettl, Martin
  • Retton, Mary Lou ... Revelation Perth International Film Festival
  • Revelation to John ... revetment
  • Review ... Revue de Paris
  • Revue de synthèse historique ... Rezé
  • Reznikoff, Charles ... Rhazes
  • RhD ... Rhine-Hesse Plateau
  • Rhine-Main-Danube Canal ... Rhizopodea
  • Rhizopogon ... rhombohedral system
  • rhombohedron ... Rhythm 10
  • rhythm and blues ... Ribes grossularia
  • Ribes hirtellum ... Rice, Susan
  • Rice, Susan Elizabeth ... Richards, Dickinson Woodruff
  • Richards, Ellen Swallow ... Richmond
  • Richmond ... Rickman, Alan Sidney Patrick
  • Rickman, Thomas ... Ridolfi, Roberto
  • Ridsdel, John ... rift volcano
  • rifting ... Rights of Man
  • Rights of Man and of the Citizen, Declaration of the ... Riley, Teddy
  • Riley, Terry ... Ring cycle
  • ring dance ... Rio 2016
  • Rio All-Suite Casino ... Río Salado, Battle of
  • Río San Juan ... Ripuarian
  • Ripuarian ... Rita Hayworth and Shawshank Redemption
  • Ritalin ... Rive, Auguste-Arthur de La
  • Rive, Richard ... riverweed
  • riverweed family ... rō-iro
  • rō-iro nuri ... robāʿī
  • Robāʿīyāt ... Robert of Normandy
  • Robert T. Stafford Disaster Relief and Emergency Assistance Act ... Robertson Of Brighton, Frederick William
  • Robertson Panel ... Robinson, Elizabeth
  • Robinson, Esmé Stuart Lennox ... Robustness
  • Roby ... Rock Around the Clock
  • rock art ... Rock, The
  • Rock, The ... Rockford Files, The
  • Rockford Peaches ... Rodez
  • Rodger, George ... Roemer v. Board of Public Works of Maryland
  • Roemer, Ole Christensen ... Rogers, William Penn Adair
  • Rogers, William Pierce ... Rokotov, Fyodor Stepanovich
  • Rokycana, Jan ... rolling motion
  • Rolling Power ... Roman de sapience, Le
  • Roman de Thebes ... Romanian Alliance
  • Romanian Catholic Church ... Rome, University of
  • Rome-Berlin Axis ... Ronaldo, Cristiano
  • Ronay, Egon ... Room for Squares
  • Room in Brooklyn ... Rope
  • Rope of Sand ... Roscelin of Compiègne
  • Roscellinus Compen-diensis ... Roseau
  • rosebay ... Rosenthal, Manuel
  • Rosenthal, Norman ... Ross, Lancelot Patrick
  • Ross, Lanny ... Rostov
  • Rostov ... Rotblat, Sir Joseph
  • ROTC ... Rotomagus
  • Rotonda, Villa ... Roume, Philippe
  • round ... route cipher
  • route orienteering ... Roxas y Acuna, Manuel
  • Roxas, Felipe ... royal council
  • royal council ... Royal Philharmonic Orchestra
  • Royal Philips Electronics NV ... Rozumovsky, Kyrylo
  • Rozvi ... rubber boa
  • rubber bridge ... Ruby Ridge
  • ruby silver ... Rudolf von Rheinfelden
  • Rudolf von Schwaben ... Rugendas, Johann Moritz
  • Rugg, Harold ... rule of quantifier transformation
  • rule of substitution ... Rumney Marsh
  • Rumoi ... running-dog pattern
  • running-key cipher ... Rusan, Otilia Valeria Coman
  • Rusas I ... Russell, John Russell, 1st Earl
  • Russell, John Scott ... Russian sturgeon
  • Russian Telegraph Agency ... Ruthenian language
  • ruthenium ... RV
  • RV ... rye whiskey
  • Ryedale ... Rzhev
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