Merriam-Webster's Collegiate Dictionary, Eleventh Edition (Revised and Updated)

Compré la versión digital para mejorar el diccionario del Kindle y hasta ahora me ha ofrecido definiciónes bastante concisas y claras; es un excelente diccionario.

I use it check words from the Bible. It was very comprehensive.

Très satisfaite par ce gros bouquin.Même si le dictionnaire numérique est considéré comme étant plus rapide et plus pratique, il faut bien dire que, lorsqu'on est chez soi, rien ne remplace un vrai dictionnaire, posé sur le bureau, accessible à tout moment. C'est le plaisir de la découverte des mots et de l'apprentissage, au gré du temps infini, sans l'urgence des consultations flash, dans un endroit public.

First of all this is an English-American dictionary. If you are looking for UK-English dictionary you should consider other alternatives. This dictionary is extremely well done. It includes loads of example an references. For almost each word there is one or more sentences to explain the use of the word. Similar words to the one searched are also listed. It's great for college students who need to write reports and thesis. Although nowadays you can use many on line dictionaries the paper version of this one is much handier because of the number and the quality of examples.I'd really suggest you this dictionary if you are writing technical documents.

It is very comprehensive.