| Part of speech | common noun |
|---|---|
| Hyphenation | en·ci·klo·pe·di·o |
| Singular | Plural | |
|---|---|---|
| Nominative | enciklopedio | enciklopedioj |
| Accusative | enciklopedion | enciklopediojn |
| Afrikaans | ensiklopedie |
|---|---|
| Albanian | enciklopedia |
| Catalan | enciclopèdia |
| Czech | encyklopedie |
| Danish | encyklopædi |
| Dutch | encyclopedie |
| English | encyclopaedia |
| Faeroese | alfrøðibók; alfrøði |
| Finnish | tietosanakirja |
| French | encyclopédie |
| German | Encyklopädie |
| Greek | εγκυκλοπαίδεια |
| Hungarian | enciklopédia |
| Icelandic | alfræðirit |
| Italian | enciclopedia |
| Jamaican Patois | insaiklopidia |
| Low German | encyklopedy |
| Luxemburgish | Enzyklopedie |
| Malay | ensaiklopedia; ensiklopedia |
| Norwegian | encyklopedi |
| Papiamento | ensiklopedia |
| Polish | encyklopedia |
| Portuguese | enciclopédia |
| Romanian | enciclopedie |
| Russian | энциклопедия |
| Saterland Frisian | Enzyklopädie |
| Scottish Gaelic | leabhar‐eòlais |
| Spanish | enciclopedia |
| Sranan | buku fu sabiso |
| Swahili | ensiklopedia; kamusi elezo; ensaiklopidia |
| Swedish | encyklopedi |
| Thai | สารานุกรม |
| Turkish | ansiklopedi |
| Welsh | gwyddoniadur |
| West Frisian | ensyklopedy |