A dictionary is a book in order and gives their meanings as well. In dictionaries the words are given in alphabetical order. Besides defining words; a dictionary may provide information about their pronunciation, grammatical forms and functions. Mostly, dictionaries explain words of same language. Some dictionaries explain words from one language into another.

A dictionary play vital role in the process of learning language. It helps particularly those students who want to learn a foreign language. Generally a dictionary explains the meaning of words. Usually a word has various meanings. Good dictionaries give the examples how a specific word is used in a range of contexts.

 To pronounce a word correctly is really an uphill task. It demands concentration and practice. Dictionaries tell the correct pronunciation of words. Some good dictionaries also give the collocation of words. This improves the writing skill of students.

In this way they learn to combine the word with other nouns, adjectives, verbs, adverbs and prepositions. Dictionaries include synonyms and antonyms of the words. This should be considered and extra quality off dictionary. This helps the students to improve their vocabulary. In short dictionaries are very useful in learning a language and in improving the writing skills of language.