All about dictionary A dictionary is a reference work that lists the words of a language and provides information about them, including their definitions, pronunciations, and origins. The term can also refer to a specialized resource containing information on a specific subject, like a medical or biographical dictionary. History Ancient origins: The earliest known dictionaries were bilingual word lists on cuneiform tablets from the Akkadian Empire around 2300 BCE. The oldest monolingual dictionaries originated in China around the 3rd century BCE. Medieval Europe: During the Middle Ages, bilingual glossaries with Latin equivalents for vernacular words were in use. In 1220, Englishman John of Garland coined the word "dictionary" for his book, Dictionarius, which helped with Latin dictation. The first English dictionary: The first purely English alphabetical dictionary, A Table Alphabeticall, was created by schoolteacher Robert Cawdrey in 1604, but it was considered unreliable. Standardization efforts: Samuel Johnson produced a more reliable English dictionary in 1755, setting a new standard. Later, Noah Webster published An American Dictionary of the English Language in 1828 to capture the American variety of English and reform spelling. The Oxford English Dictionary (OED): In 1884, the Oxford University Press began releasing the comprehensive and definitive OED in parts. It was not fully completed until 1928 and remains a trusted authority on the English language. Common types of dictionaries Dictionaries come in many forms, tailored for different users and purposes. Monolingual: Lists and defines words in a single language for native speakers and proficient learners. Bilingual or multilingual: Provides word equivalents and translations between two or more languages. Specialized: Focuses on a specific subject, field, or register, such as law, medicine, or slang. Learner's: Uses simplified language to define words, making it easier for those learning a new language. Visual: Uses illustrations with labels to define items or concepts, often for children or technical fields. Rhyming: Lists words that rhyme with each other, used primarily for poetry and songwriting. Thesaurus: Lists synonyms (words with similar meanings) and sometimes antonyms (words with opposite meanings). Historical: Traces the chronological development of words and senses over time. How to use a dictionary Search alphabetically: Whether in a physical book or online, dictionaries organize words in alphabetical order. Use guide words at the top of each page to quickly narrow down your search. Examine the entry: Once you find the word, note the following: Pronunciation: Phonetic symbols or other guides show you how to say the word correctly. Part of speech: Abbreviations indicate if the word is a noun (n.), verb (v.), adjective (adj.), etc. Definition(s): The meaning(s) of the word. A single word can have multiple definitions, often numbered. Etymology: The history and origin of the word. Usage: Sample sentences may be provided to show how the word is used in context. Synonyms and antonyms: Many dictionaries list words with similar or opposite meanings. Distinguish homographs: Be aware of homographs—words that are spelled the same but have different meanings and histories. Each homograph has a separate, numbered entry.