Merriam-Webster's Pocket Spanish-English Dictionary is a best seller on Amazon.com, while Gran Diccionario Oxford is a top choice for those seeking to translate from Spanish to English. Collins Beginner's Spanish Dictionary is ideal for those just starting to learn the language.
For travel, the Merriam-Webster Pocket Spanish-English Dictionary, which contains over 40,000 entries, is an excellent choice because of its small size. The Gran Diccionario Oxford includes words from throughout the Spanish-speaking world and is an excellent choice for a native speaker or someone well-versed in the language. Updated in 2015, Collins Beginner's Spanish Dictionary includes examples, tips and even games to help beginners learn the language.