Oka Oficiala Aldono (8OA): the 187 official roots
All 187 roots made official by Oka Oficiala Aldono (8OA) (1974), alphabetically, with their meaning in English and a link to each dictionary entry.
- Afrik- Africa
- alban- Albanian
- Alĝeri- Algeria
- amator- amateur
- ambasad- embassy
- Amerik- the Americas
- ampol- bulb
- animal- animal
- arab- Arab
- aristokrati- aristocracy
- armen- Armenian
- asemble- assembly
- asist- aid
- Atlantik- Atlantic Ocean
- atlas- atlas
- aŭdac- audacity
- Aŭstrali- Australia
- aŭt- car
- aŭtobus- bus
- avantaĝ- advantage
- avenu- avenue
- Azi- Asia
- beb- baby
- belg- Belgian
- bend- tape
- Birm- Burma
- Bolivi- Bolivia
- bovl- bowl
- Brazil- Brazil
- bred- breed
- buĝet- budget
- bulgar- Bulgarian
- central- central
- cep- onion
- cirkl- circle
- cirkvit- circuit
- dan- Dane
- demokrati- democracy
- distribu- distribution
- drat- wire
- ekran- screen
- Ekvador- Ecuador
- elektronik- electronics
- emerit- retired person
- eskap- escape
- eston- Estonian
- etap- distance covered
- etiop- Ethiopian
- event- event
- fac- face
- farb- paint
- feder- federate
- film- film, movie
- fotel- easy-chair
- fotografi- photography
- fuĝ- flight
- garaĝ- garage
- grek- Greek
- Gvatemal- Guatemala
- Gvine- Guinea
- ĝir- endorsement
- hangar- hangar
- heĝ- hedge
- helikopter- helicopter
- humid- humidity
- hungar- Hungarian
- ĥirurg- surgeon
- ĥirurgi- surgery
- impet- impetus
- injekt- injection
- interpelaci- interpellation
- invent- invention
- Irak- Al-Iraq
- Iran- Iran
- Irland- Ireland
- Island- Iceland
- ital- Italian
- kakt- cactus
- kamion- lorry
- Kanad- Canada
- kanzon- song
- kasked- cap
- kejl- peg
- kin- cinematography
- kolumn- column
- konced- concession
- koncentr- concentrate
- kontest- call into question
- kosm- space
- Kostarik- Costa Rica
- Kub- Cuba
- kurent- current
- laboratori- laboratory
- lap- burdock
- latitud- latitude
- latv- Latvian
- Liban- Lebanon
- Liberi- Liberia
- Libi- Libya
- licenc- licence
- likv- liquid
- litografi- lithography
- longitud- longitude
- lotus- sacred lotus
- lubrik- lubricate
- luk- skylight
- map- map
- Marok- Morocco
- Mediterane- Mediterranean Sea
- meĥanism- mechanism
- Meksik- Mexico
- metalurgi- metallurgy
- ministeri- ministry
- minus- negative
- mistifik- hoax
- monarĥi- monarchy
- moskit- mosquito
- multiplik- multiplication
- muzel- muzzle
- nadl- needle
- Nederland- The Netherlands
- neglekt- negligence
- nervoz- anxious
- Nikaragv- Nicaragua
- nilon- nylon
- norveg- Norwegian
- obstakl- obstacle
- ofert- bid
- opon- oppose
- ort- right angle
- Pacifik- Pacific Ocean
- Pakistan- Pakistan
- Panam- Panama
- pane- breakdown
- Paragvaj- Paraguay
- paraŝut- parachute
- Peru- Peru
- plast- plastic
- plonĝ- dive
- plus- plus sign
- Polinezi- Polynesia
- preleg- lecture
- preskrib- prescription
- prolet- proletarian
- radiator- radiator
- reflekt- reflection
- rivel- develop
- rivolu- revolution
- ruman- Romanian
- sandviĉ- sandwich
- saten- satin
- sens- sense
- sin- bosom
- singular- singular
- Siri- Syria
- situ- site
- ski- ski
- sled- sled
- sorg- sorghum
- spur- trace
- stadion- stadium
- start- start
- subtrah- subtraction
- Sudan- Sudan
- suplement- supplement
- surfac- surface
- sved- Swede
- ŝofor- driver
- tajl- carve
- tajp- type
- televid- television
- tempest- storm
- tener- tender
- teren- campus
- tig- stem
- tonel- ton
- trajn- train
- traktor- tractor
- trejn- coach
- tun- metric ton
- Tunizi- Tunisia
- Urugvaj- Uruguay
- vakcin- vaccine
- vegetal- vegetable
- Venezuel- Venezuela
- vertic- vertex
- vit- grapevine
Counts follow the officiality marks in Reta Vortaro (ReVo); the Academy of Esperanto keeps the official list in its Akademia Vortaro, and its own counts differ by a few roots. Words built from official roots are normal Esperanto even when they are not on any list: see Word building. Academy.