Thankfully the days of computerised dictionaries only being available on CD-ROM are long gone. Today, you can just download a dictionary app from the App Store and keep it tucked away on your phone ready for when you need it. This Merriam-Webster Dictionary is one of the better ones available as it lets you very quickly perform searches to find the meaning of words, and many have audio pronunciations available.
We also like the fact that it supports voice search, so you can just say a word into your phone to find its meaning - handy for when you don’t actually know the word's correct spelling. Along with the dictionary features there's also a Thesaurus that lets you look up both synonyms and antonyms.
Audio pronunciation and voice search features help this dictionary app stand out from the crowd.