Wiktionary API
Wiktionary API provides access to Wiktionary, the free collaborative multilingual dictionary maintained by the Wikimedia Foundation. Unlike commercial dictionary APIs, Wiktionary is a community-contributed resource that covers not just English but thousands of languages, including many African and Nigerian languages. The Wiktionary database contains definitions, etymologies, pronunciations, conjugations, translations, and usage examples for words across its language editions.
The Wikimedia REST API used to access Wiktionary content works through the standard Mediawiki API endpoint. Developers request page content for a specific word in a specific language edition — the English Wiktionary (en.wiktionary.org) contains entries for words from all languages explained in English, while the Yoruba Wiktionary (yo.wiktionary.org), Hausa Wiktionary (ha.wiktionary.org), and Igbo Wiktionary (ig.wiktionary.org) contain entries in their respective languages. This multi-edition structure makes Wiktionary particularly valuable for Nigerian language documentation and education applications.
Etymology data is one of Wiktionary's strongest features. Community contributors trace word origins through historical language families, identifying cognates, borrowings, and derivations. For Nigerian English words and loanwords — Yoruba words that have entered Nigerian English like "eba," "egusi," and "suya" — Wiktionary entries often include origin language documentation that is absent from formal English dictionaries. Nigerian language preservation apps can use Wiktionary etymology data to document and explain how Nigerian words relate to their root languages.
Conjugation tables for verbs in many languages are included in Wiktionary entries, providing the full inflection paradigm (all tenses and forms). For Nigerian language learning apps teaching Yoruba, Hausa, or Igbo verb conjugation, Wiktionary's conjugation tables provide structured grammatical reference data that would require years of manual compilation to build from scratch.
Translation data maps words across language pairs — the English word "mother" has documented translations in hundreds of languages, with the Yoruba translation "iya" and the Hausa translation "uwa" available. Nigerian translation apps and multilingual dictionaries can use Wiktionary translation data as a foundation, supplemented by human review for accuracy. The Wiktionary API's access to historical citations is available for some word entries — historical usage examples drawn from published texts spanning centuries of English writing. For Nigerian researchers studying the historical evolution of English vocabulary, or educators teaching the development of language over time, these historical citation records provide primary source evidence of how words were used in specific periods. Etymology sections trace borrowings between languages, noting when English adopted words from Latin, French, Arabic, or other source languages — connections that illuminate the multicultural history embedded in everyday vocabulary.
Reconstruction entries in Wiktionary document proto-language forms — hypothetical ancestral word forms from Proto-Bantu or Proto-Niger-Congo that linguists have reconstructed by comparing modern language descendants. For Nigerian language researchers and developers building indigenous language preservation tools, these reconstruction entries connect modern Yoruba, Igbo, and Hausa vocabulary to their deeper linguistic ancestry, supporting educational resources that teach the historical depth and sophistication of Nigerian language families.