English Dictionaries

A dictionary is a reference work that lists the words of a language in an ordered form, usually alphabetical, and gives information about each one. A typical entry includes the spelling, pronunciation, part of speech and one or more definitions, and often the word's origin and examples of use. English dictionaries serve as standard references for the meaning and correct use of words, helping readers understand unfamiliar terms and writers choose words precisely.

Dictionaries come in several kinds. General dictionaries cover the everyday vocabulary of the language, while specialised dictionaries focus on a particular field, such as medical, legal or computing terminology, defining the technical words used in that subject. Bilingual dictionaries give equivalents between two languages for translation, and pronunciation dictionaries concentrate on how words are spoken. A thesaurus is a related but distinct tool: rather than defining words, it groups them by meaning so that a user can find synonyms and related expressions.

Dictionaries also handle the quirks of English, such as heteronyms, which are words spelled the same but pronounced differently and carrying different meanings, and the many abbreviations and acronyms in common use. Once available only in print, dictionaries are now widely accessed online, where they can be searched instantly and updated as the language changes. Alongside encyclopedias and other reference libraries, they remain core tools for reading, writing, study and translation.

Frequently asked questions

What does a dictionary entry usually contain?

It typically gives the spelling, pronunciation, part of speech and definitions of a word, and often its origin and examples of how it is used.

How does a dictionary differ from a thesaurus?

A dictionary defines words and explains their meaning, while a thesaurus groups words by meaning so a user can find synonyms and related terms.

What is a specialised dictionary?

It is a dictionary focused on one field, such as medicine, law or computing, defining the technical vocabulary used within that subject.