Sepa Oficiala Aldono (7OA): the 30 official roots
All 30 roots made official by Sepa Oficiala Aldono (7OA) (1958), alphabetically, with their meaning in English and a link to each dictionary entry.
- agronom- agronomist
- antropolog- anthropologist
- bibliograf- bibliographer
- biograf- biographer
- biolog- biologist
- entomolog- entomologist
- etimolog- etymologist
- etiolog- etiologist
- etnograf- ethnographer
- fiziolog- physiologist
- genealog- genealogist
- geograf- geographer
- geometr- geometer
- grafolog- graphologist
- homeopat- homeopath
- kartograf- cartographer
- kosmograf- cosmographer
- meteorolog- meteorologist
- mineralog- mineralogist
- mitolog- mythologist
- oligark- oligarch
- ornitolog- ornithologist
- paleograf- palaeographer
- paleontolog- paleontologist
- patolog- pathologist
- plutokrat- plutocrat
- teokrat- theocrat
- tipograf- printer
- topograf- topographer
- zoolog- zoologist
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.