You decide what goes in the dictionary

Eudic is an English dictionary tool that runs across platforms, covering Windows, macOS and both mobile systems. The feature people value most is extensibility. Beyond the entries that ship with it, third-party dictionary files can be imported, including the two formats the dictionary community has used for years. That means a specialist dictionary, a bank of example sentences and a glossary of terms can all be piled in according to need, and one lookup then shows the results of several dictionaries side by side.

For anyone working in a technical field, that changes the tool from a dictionary into a small reference library. A general dictionary will define a term; a specialist one will tell you how the term is actually used in the trade, and a glossary will tell you what the organisation decided to call it. Reading all three at once, in one place, is the entire argument for this design.

Word capture and selection lookup

In daily use the part that saves the most effort is capture: while reading a web page, a document or a PDF, selecting or long-pressing a word brings up the definition directly, with no switching of windows and no pasting. The desktop side supports capture from the screen and lookup on a selection; on mobile it is a long press. Any word looked up can be added to the vocabulary book with a single action, and once an account is in use the book synchronises across devices - which, with review plans and a card-style way of memorising, connects the act of looking a word up to the act of learning it.

That connection is the part most dictionary tools miss. A word looked up in a hurry and a word remembered are two different states, and the only thing standing between them is a way of keeping the first long enough to become the second.

A few things for study

Pronunciation and example sentences are standard, and the examples can be filtered by source, which matters when the difference between a literary usage and a technical one is the whole question. The tool also connects with the same vendor's listening product, so words met while listening and while reading feed into the same place. Recent versions have added a set of features built on a language model: translation, correction of grammar and spelling, assistance with writing on a given topic, expansion of selected text and polishing of a draft. That part is billed separately, by amount used.

The phone is where the vocabulary book stops being merely tidy and becomes useful. The same entries can be reviewed in the gaps of a day, and the card arrangement gives a list an order. Whether that is enough to make a word stay is a question of method rather than of software, but the software at least removes the excuse that the list was on another machine.

What the arrangement does not do is decide what to study. A book filled by capture alone reflects whatever happened to be read - a good sample of one field, or the accident of one afternoon. Review plans help with timing, not with selection, and the first week is the cheap moment to throw out what will never be opened again.

Versions and how it is sold

The mobile and desktop versions are charged separately. The desktop version is a one-time licence, the mobile version can also be bought outright, and there is in addition a periodic membership for the model-based features. As of September 2026 the mobile version series has reached 26.9.1, with the Windows build following close behind it, and the rhythm of updates is fairly frequent.

For anyone who looks words up often and wants to assemble a dictionary library of their own, the extensibility and the capture experience are the solid parts. Two things to keep in mind: the desktop version is a paid licence, and the model-based features are billed on top. For looking up a few words on a phone, the free state is enough for a long while.