- Extensive hyperlinked dictionary with 150,000 entries. - Large and growing collection of 2000+ illustrations for 4000+ terms including maps and national flags for most countries. The collection will continue to grow with future Dictionary updates (internet connectivity is required for illustrations). - Fully integrated dictionary, thesaurus, wikipedia browser (internet connectivity is required for accessing wikipedia) and rhyming dictionary. - Customizable definitions let you select what you want to see. You can display synonyms, antonyms (opposite words), hypernyms (more general words), hyponyms (more specific words) and related words (category words). - The only dictionary in the app store with advanced high quality Text-to-Speech capability to say defined words out loud (tap the speaker button to hear the word). - Pronunciation guide in either IPA or Merriam-Webster style notation. - E-mail button to e-mail word definitions, allowing you to access them anywhere. - Intelligent word search and spell check - Word Shake to learn new words and to expand your vocabulary and knowledge. Shake your iPhone to learn about a new word or topic. When Dictionary is used primarily as a Wikipedia browser, shaking your iPhone will display a random Wikipedia topic. - Bookmarks for selected words. - History of previously searched word.