English for Food Technology: Dictionary:

1.Babylon
English-English(also contains all kind of other languages like French-French etc)
http://www.babylon.com/affiliates/landing/index.php?id=10588&textlink=gkn15253&gclid=CK2d89jcgqUCFdcq3wodjmd2AA

Free translator/dictionary which can be saved into your computer.Really useful,shows every tenses or words different forms(singular,plural ; present simple,past simple,etc).When reading a text and having problems with some words meaning, mark the sentence you want to translate and make a left mouse click.It translates the word automatically.Has opportunity to listen how to spell every word.Trustful and the most comprehensive dictionary I found.

2. Cambridge dictionaries online
English-English
http://www.babylon.com/affiliates/landing/index.php?id=10588&textlink=gkn15253&gclid=CK2d89jcgqUCFdcq3wodjmd2AA

Free translator,easy to use.Gives the word you looked for and also gives opportunity to see for example it's different forms.Has opportunity to listen the word and also gives the pronounce.One more advantage-gives examples of words and shows the different meanings inside sentence.Despite of that,not so complete as the first dictionary described.


3.Dictionary.com
English-English

Gives full list of every words different forms(synonyms,related words,nearby words) and also gives examples how each word can be used.Seems not so trustful,maybe because of the commercials flashing everywhere on the site,but description of the words is still full.