Build an online dictionary by combining several printed dictionaries. Is it legal?


I intend to build an online application for defining the meaning of words, synonyms, etc. in a certain language.

This information will come from a combination of printed dictionaries. I'm almost certain this in not (entirely) legal.

However, I'm wondering how to do this without violating copyright. How,, etc. did it?

Legal Copyright

asked Sep 1 '10 at 17:51
Dyn Zack
216 points
Get up to $750K in working capital to finance your business: Clarify Capital Business Loans
  • On a side note I found this: It protects all of the copyrightable content: creative works, such as the particular selection and arrangement of the definitions, but not the words or definitions themselves. So you can't photocopy the dictionary, but you could (in theory) transcribe the factual information, none of which is covered by copyright (in the USA). – Dyn Zack 13 years ago

2 Answers


This reminds me a bit of the process of making business directories. People in that business do often combine, aggregate and edit the work of others. Look at it this way, if you are going to look at every word in those dictionaries, analyze the definitions, combine, rewrite and "add value" to them, then eventually this will become "your work" - especially as you add more sources. On the other hand, if you just slop them together and immediately publish, clearly that is not your work. There is a line between using source material, and plagiarism which I would avoid if I were you.

answered May 8 '12 at 01:10
Rob Gordon
441 points
  • Watch out for the methods the content providers use to catch copying - fake words in their dictionaries or fake streets on maps. – James 12 years ago


They have contrqacts with whoever supplies the data.

In most jurisduictions it is not legal to copy databases. In some it IS legal, if you pay someone for making the copy physically (typing) AND if the original data is AS DATA not copyrighted, just as collection (phone book). Most likely not the case for dictionaries.

Talk to the companies creating the original work. Prepare to pay.

answered Sep 1 '10 at 18:11
Net Tecture
11 points
  • Thanks for the info! So I guess, back to basics: Funding. – Dyn Zack 13 years ago

Your Answer

  • Bold
  • Italic
  • • Bullets
  • 1. Numbers
  • Quote
Not the answer you're looking for? Ask your own question or browse other questions in these topics:

Legal Copyright