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On 10 June 2010 the alphabetical range Rh-rococoesque was added to the New Edition: every word in this range has been thoroughly revised and updated. Below are listed all the new words in the range. We have also added a further list of new words from across the alphabet. The OED's chief editor, John Simpson, provides some observations on the revision of this section of the alphabet, and Katherine Martin comments on some of the most interesting new words in the batch.

Rh, n.¹
Rhaetical, adj.
rhamnaceous, adj.
rhamnitol, n.
Rhamphorhynchus, n.
rhandir, n.
rhapsodized, adj.
rhathymia, n.
rhedarium, n.
Rheic, adj.²
rheography, n.
rhetoricity, n.
rheumatological, adj.
rhingyll, n.
rhinolaryngological, adj.
rhinolophid, adj. and n.
rhinosinusitis, n.
Rhipaean | Rhipean, adj.
rhipidoglossan, adj.
rhizocephalan, n. and adj.
rhizomatic, adj.
rhizomatist, n.
rhizopodial, adj.
rhizotron, n.
Rhode Islander, n.
Rhodiola, n.
Rhodophyta, n.
rhodostannite, n.
Rhody, n.
rhoicissus, n.
rhombical, adj.
rhombically, adv.
rhombicuboctahedron, n.
rhombomere, n.
Rhombozoa, n.
rhoptry, n.
rhotic, adj.
rhynchocephalic, adj.
rhynchocoelan, n. and adj.
rhyncholith, n.
rhyparograph, n.
rhythmica, n.
riad, n.
rib, n.⁴
riba, n.
ribaldo, n.
ribattuta, n.
ribavirin, n.
ribbie, n.²
ribollita, n.
riboside, n.
ribostamycin, n.
Ricardian, adj.² and n.²
Riccati, n.
rice burner, n.
riced, adj.¹
rice stick, n.
Richardia, n.¹
Richard Snary, n.
Richardsonian, adj.²
richly, adj. (and n.)
Richmond birdwing, n.
ricine, n.
ricinolate, n.
ricinolein, n.
ricinus, n.²
ricked, adj.¹
rickettsiosis, n.
rico, n.¹
RID, n.²
riddim, n.
riddlesome, adj.
RIDE, n.³
ride-along, n.
ridge tiling, n.
ridibund, adj.
riding surveyor, n.
Riel, n.¹
rifferama, n.
riffola, n.
-rific, comb. form
rifledom, n.
rig-a-jig, int.
Rigel Kent, n.
Rigel Kentaurus, n.
right and left handed, adj.
right-angularly, adv.
right brain, n. and adj.
right-brained, adj.
Righteous Gentile, n.
rightify, v.
rightish, adj.
-rightist, comb. form
right justification, n.
right to choose, n.
right to know, n.
right turning, n.
rigidizing, adj.
rigolet, n.
rikishi, n.
rimming, n.²
rincon, n.
rinder, n.²
rinfresco, n.
ring-a-ding, int., n., and adj.
ringal, n.
ring-a-levio, n. and int.
Ringatu, n.
ringback, n.
ringling, n.¹
ringmastering, n.
ring-off, n.
ring-round, n.
ring tone, n.
rinkle, n.
Rio, n.¹
rio, n.²
Riphaean | Riphean, adj.
ripper, adj.
ripple, n.¹
ripple-through, adj.
ripsawing, n.
ripstaver, n.
rip-staving, adj.
riqq, n.
rise heading, n.²
riserva, n.
risperidone, n.
risposta, n.
ristra, n.
ristretto, n.
Rittmeister, n.
rivalling | rivaling, adj.
rive droite, n.
riverage, n.
Rivulus, n.
rix, v.
Rix-chancellor, n.
Rizla, n.
Rn, n.
roa, n.
Roaccutane, n.
road-blocking, n.
road-blocking, adj.
roadkill, n.
road-trip, v.
roaner, n.
roar, v.²
rob, n.²
robalo, n.
Robertine, n.¹
Roberval balance, n.
Robespierrean, adj.
robiola, n.
robo-, comb. form
robot, n.¹
robug, n.
Robur Carolinum, n.
rock-and-roll, v.
rock-based, adj.²
rock-climbing, adj.
rocker, v.
rock idol, n.²
rockiness, n.²
rockism, n.²
rockist, n. and adj.
rock jock, n.¹
rock jock, n.²
rock-out, n.
rock paper scissors, n.
rockscape, n.
rocky road, n.

In addition to these new entries, a number of new subordinate entries were added to existing entries. These included:

(Under rhamno-, comb. form)
- rhamnoglucoside
- rhamnoglycoside
- rhamnohexose
(Under Rheic, adj.²)
- Rheic ocean
(Under rheo-, comb. form)
- rheocasting
- rheocline
(Under rheography, n.)
- rheographic
(Under rhetorical, adj.)
- rhetorical analysis
- rhetorical theory
- rhetorical trope
(Under rheumatic, adj. and n.)
- rheumatic-like
(Under rheumatize, v.)
- rheumatized
(Under rheumy, adj.)
- rheumily
(Under Rhineland, n.)
- Rhineland rod
(Under rhino, n.²)
- rhino-like
(Under rhinoceros, n.)
- Rhinoceros Party
(Under rhinoscopic, adj.)
- rhinoscopically
(Under rhizo-, comb. form)
- rhizodontrophy
- rhizomania
(Under rhizocarpic, adj.)
- rhizocarpic acid
(Under rhizomorph, n.)
- rhizomorphic
(Under Rhizopoda, n.)
- rhizopodist
(Under Rhode Island, n.)
- Rhode Island sloop
- Rhode Island cheese
- Rhode Island currency
- Rhode Island money
- Rhode Island johnnycake
(Under rhombic, adj. and n.)
- rhombic mica
- rhombic pyrites
- rhombic quartz
(Under rhombomere, n.)
- rhombomeric
(Under Rhombozoa, n.)
- rhombozoan
(Under rhubarb, n. and adj.)
- rhubarb drink
- rhubarb triangle
(Under rhythm, n.)
- rhythm box
- rhythm stick
- rhythm system
(Under rhythmic, adj. and n.)
- rhythmic breathing
- rhythmic gymnast
(Under riband, n.)
- riband development
(Under ribbed, adj.)
- ribbed melilot
- ribbed mussel
(Under rib, n.¹)
- rib meristem
- rib riding
- rib-striped snout
- rib-welted
(Under ribbon, n.)
- ribbon bed
- ribbon cable
- ribbon cutting
- ribbon-cutting ceremony
- ribbon lake
- ribbon-rasp
- ribbon shirt
- ribbon plant
- ribbon tree
- ribbon weed
(Under rib-tickling, adj.)
- rib-ticklingly
(Under rice, n.²)
- rice bug
- rice blast
- rice bubbles
- rice fanner
- rice rocket
- rice vinegar
- rice cheesecake
- rice florentine
- rice tart
- rice estate
- rice barrel
- rice cask
- rice sieve
- rice vessel
(Under riced, adj.²)
- riced milk
(Under rice paper, n. and adj.)
- rice paper painting
(Under rich, adj., n., and adv.)
- rich bitch
- rich blood
- rich-field
- rich kid
- rich text
- Rich Text Format
(Under ricinelaidic, adj.)
- ricinelaidate
- ricinelaidin
(Under ricinoleic, adj.)
- ricinoleamide
(Under ricinus, n.²)
- ricinian
(Under rickettsia, n.)
- rickettsia-like
(Under ricochet, n.)
- ricochet effect
(Under riddel, n.)
- riddel post
(Under ride, n.²)
- ride-share
- ride quality
(Under ride, v.)
- to ride out
- to ride over——
(Under ridge, n.¹)
- ridge land
(Under ridicule, n.²)
- ridicule basket
(Under ridiculous, adj., n., and adv.)
- ridiculous-sounding
(Under riding, adj.)
- riding crosstree
- riding groom
(Under riding, n.¹)
- riding cloth
- riding exercise
- riding lamp
- riding stick
- riding belt
- riding breeches
- riding frock
- riding saddle
- riding camel
- riding gelding
- riding mare
- riding nag
- riding road
- riding weather
(Under riding, n.²)
- riding association
(Under Riemann, n.)
- Riemann sphere
- Riemann space
- Riemann curvature
- Riemann curvature tensor
- Riemann sum
(Under riffle, n.)
- riffle beetle
(Under rifle, n.³)
- rifle bolt
- rifle shirt
- rifle ammunition
- rifle cartridge
- rifle powder
- rifle scabbard
- rifle shell
- rifle stock
- rifle trigger
- rifle platoon
- rifle troop
- rifle-toting
(Under rift, n.²)
- rift zone
(Under rigging, n.²)
- rigging position
- rigging rope
- rigging slinger
(Under right and left handed, adj.)
- right and left handed screw
(Under right, adj. and int.)
- right-arm
- right circular
- right-circularly
- right-click
- right corner
- right-footed
- right prismatic
- right–wrong
- right tackle
(Under right, n.)
- right of abode
- writ of right patent
(Under right-eye, adj.)
- righteye flounder
(Under right-eyed, adj.)
- right-eyed flounder
(Under right hand, n. and adj.)
- right-hand rule
- Fleming's right-hand rule
(Under rigid, adj. and n.)
- rigid body
(Under rima, n.)
- rimal
(Under rim, v.⁴)
- rim job
(Under rimrock, n.)
- rimrocked
(Under rimy, adj.)
- rimy white
(Under ring, n.¹)
- ring of steel
- Ring of Fire
- ring of iron
- ring arc
- ring-around
- ring beam
- ring-bound
- ring chromosome
- ring composition
- ringcraft
- ring doughnut
- ring galaxy
- ring gauge
- ring gear
- ring knocker
- ring laser
- ring laser gyroscope
- ring light
- ring modulation
- ring mould
- ring mountain
- ring oscillator
- ring-piece
- ring-porey
- ring post
- ring room
- ring-rusty
- ring-shell
- ring species
- ring spinner
- ring theory
- ring vaccination
- ring vortex
- ring seal
(Under ringed, adj.)
- ringed turtle-dove
(Under ring-fence, v.)
- ring-fencing
(Under ring-neck, n.)
- ring-neck dove
(Under ring-necked, adj.)
- ring-necked dove
- ring-necked plover
(Under ring-tailed, adj.)
- ring-tailed cat
- ring-tailed marlin
(Under rinse, n.)
- rinse cycle
- rinse–hold
- rinse water
(Under riot, n.)
- riot duty
- riot cop
(Under rip, v.¹)
- to rip off
- rip fence
- rip job
(Under rip-off, n.)
- rip-off Britain
(Under ripping, n.)
- ripping bar
(Under ripple, n.⁵)
- ripple box
- ripple drift
- ripple-fire
(Under rising, adj.)
- rising box
- rising sign
- rising star
- rising trot
- rising vote
(Under rising, n.)
- rising of the mother
(Under risk, n.)
- risk-adverse
- risk assessment
- risk-averse
- risk function
- risk group
- risk manager
- risk-neutral
- risk pooling
- risk sharing
(Under riskful, adj.)
- riskfulness
(Under ritual, adj. and n.)
- ritual bath
- ritual dance
- ritual magic
- ritual meal
(Under ritualize, v.)
- ritualizing
(Under river, n.¹)
- river bus
- river claim
- river corridor
- river sand
- river swamp
- river washing
- river cat
- river fowl
- river shrimp
- river cruise
- river bluff
- river ward
(Under riverboat, n.)
- riverboat casino
- riverboat gambler
- riverboat gambling
(Under riverine, adj. and n.)
- riverine rabbit
(Under rivet, n.¹)
- rivet nail
- rivet pin
(Under RNA, n.)
- RNA world
(Under roach, n.⁴)
- roach coach
(Under road, n.)
- road belt
- road cart
- road cattle
- road code
- road fund licence
- road-going
- road grader
- road machine
- road marking
- road movie
- road salt
- road stud
- road warrior
- road closing
- road closure
- road crash
- road fatality
- road locomotion
- road network
- road smash
(Under roadside, n. and adj.)
- roadside rest
(Under road trip, n.)
- road tripper
(Under roan, n.²)
- Roan duck
(Under roaring, adj. and adv.)
- roaring camp
(Under roast, adj.)
- roast dinner
(Under robber, n.)
- robber chieftain
(Under robbery, n.)
- robbery charge
- robbery victim
(Under rob-, comb. form)
- rob-house
(Under robo-, comb. form)
- robocall
- robocop
(Under robot, n.²)
- robot station
(Under rock basin, n.)
- rock-basin lake
(Under rock, n.²)
- Rockfeast
(Under rock, n.¹)
- rock and rye
- on-the-rocks glass
- Rocks and Shoals
- rock cocaine
- rock cycle
- rock fault
- rocks glass
- rock spider
- Rock Cornish
- Rock Cornish hen
- Rock Cornish game hen
- rock jumper
- rock parrot
- rock gunnel
- rock sea bass
- rock sage
- rock-dwelling
(Under rock, n.³)
- rock chick
- rock god
- rock ballad
- rock concert
- rock legend
(Under Rockefeller, n.)
- Rockefeller Republican
(Under rocker, n.¹)
- rocker-bottom
(Under rocket, n.⁴)
- rocket salad
(Under rocket, n.⁵)
- rocket booster
- rocket attack
- rocket barrage
- rocket firing
(Under rock 'n' roll, n. and adj.)
- rock 'n' roll artist
(Under Rocky Mountains, n.)
- Rocky Mountain bighorn
- Rocky Mountain bighorn sheep
- Rocky Mountain dormouse
- Rocky mountain flying squirrel
- Rocky Mountain rat
- Rocky mountain whitefish

Out-of-sequence new entries

10 June 2010 also saw the publication of the the following new entries from across the alphabet:

4GL, n.
anilingus, n.
animal rightist, n.
anteclypeus, n.
ascon, n.
asconoid, adj. and n.
atelestite, n.
band-tail, n.
band-tailed, adj.
bell-ring, n.
caffè ristretto, n.
C. diff., n.
C. difficile, n.
colligative, adj.
data centre | data center, n.
espresso ristretto, n.
exa-, comb. form
full rig, n.
geoengineering, n.
halirift, n.
hindbrain, n.
hot-dogging, n.
jatropha, n.
Latrocinium, n.
left and right, adv. and n.
left bower, n.
leucon, n.
leuconoid, adj. and n.
microinvasive, adj.
neuroprotection, n.
neuroprotective, adj.
pellitorine, n.
rasta roko, n.
Regaine, n.
scissors paper stone, n.
spit roast, n.
stonerock, n.
Zantedeschia, n.

In addition to these new entries, the following out-of-sequence subordinate entries were added:

(Under Atlantic, adj. and n.)
- Atlantic ridley
(Under benefit, n.)
- benefit package
- benefits package
- benefit tourist
- benefit tourism
(Under best, adj. and adv.)
- best bower
(Under blood, n.)
- bloodberry
(Under Boston, n.²)
- Boston rocker
(Under cardio-, comb. form)
- cardioprotection
- cardioprotective
(Under C, n.)
- CGI
(Under chain, n.)
- chain ring
(Under clinical, adj.)
- clinical pharmacology
(Under closed, adj.)
- closed traverse
(Under complex, adj.)
- complex manifold
- complex analytic manifold
(Under critical, adj.)
- critical flicker frequency
- critical opalescence
(Under early, adj. and n.)
- early retirer
(Under fourth, adj. and n.)
- fourth generation
(Under heroic, adj. and n.)
- heroic couplet
(Under hypnotic, adj. and n.)
- hypnotic regression
(Under iambic, adj. and n.)
- iambic pentameter
(Under I, n.¹)
- ICSI
(Under letter, n.¹)
- letter of reference
(Under scalded, adj.¹)
- scalded skin syndrome
- staphylococcal scalded skin syndrome
(Under server, n.)
- server farm
(Under shear, n.²)
- shear strain
(Under sitting, adj.)
- sitting trot
(Under spin, n.¹)
- spin cycle
(Under spit-roast, v.)
- spit-roasting
(Under staircase, n.)
- staircase lock
(Under state, n.)
- state of repair
(Under stone, n.)
- stone of destiny
- Stone of Scone
(Under support, n.)
- support level
(Under thrombo-, comb. form)
- thrombophilia
(Under U, n.¹)
- USB port
- USB drive
- USB flash drive
(Under wash, n.)
- wash cycle

Finally, new meanings were added to the following entries:

answer, n.
back, n.¹
benefit, n.
bilingual, adj.
change, n.
cover, v.¹
covering, n.¹
covering, adj.
left, adj.¹, adv., and n.
left hand, n.
spit-roast, v.
wrap, v.

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