AiOne英語辞書

Learning Science, Inc.

About this app

This is a full-featured English dictionary that is completely free and ad-free.

It includes over 2 million English-English-Japanese headwords, over 600,000 Japanese-English headwords, and over 2.2 million example sentences.

It features an unlimited vocabulary list and a genre-based list of frequently used words.

For business or exam preparation, this one English dictionary is all you need.

[Features of AiOne English Dictionary]

1. Uses the world's largest open dictionary data
- Uses an open-source dictionary compiled and checked by native speakers worldwide, allowing you to learn the latest terminology definitions.
- Includes over 2 million English-English-Japanese headwords, over 600,000 Japanese-English headwords, and over 2.2 million example sentences.
- We plan to regularly add new words and example sentences.

2. Understand nuances with English-English-Japanese
- Switch between English-Japanese, English-English, and English-English-Japanese, allowing you to accurately grasp subtle differences in meaning that cannot be conveyed through Japanese translation alone.

3. Acquire practical, real-world English expressions
- Includes a wealth of idiomatic expressions and examples extracted from a wide range of corpora, from business to sports.

4. Frequently Used Word Lists for Busy Business Professionals and Exam Takers
- Includes rankings of frequently used words in 6 fields, including those for exam preparation.
- Aim for efficient vocabulary improvement by checking the list of approximately 15,000 frequently used words.

5. Completely Free, No Ads
- All features are free and ad-free.
- There are no limits on the number of words you can register in your vocabulary list.

* User account registration (free) is required to use all features.
* We may send advertisements for our products via email, etc.

[Terms of Use and Privacy Policy]
Terms of Use: https://aione.learningscience.jp/terms
Privacy Policy: https://aione.learningscience.jp/privacy
* Please check the above Terms of Use and Privacy Policy before use.
* By installing, you are deemed to have agreed to all of the above.

What’s new

画面デザインの一部を変更し、表示の高速化を行いました。