An electronic dictionary is a dictionary whose data exists in digital form and can be accessed through a number of different media. Electronic dictionaries can be found in several forms, including:

• as dedicated handheld devices
• as apps on smartphones and tablet computers or computer software
• as a function built into an E-reader
• as CD-ROMs and DVD-ROMs, typically packaged with a printed dictionary, to be installed on the user’s own computer
• as free or paid-for online products