Dictan - Dictionary Viewer APK for Android

Dictan is a free Dictionary Viewer for Android which supports .fdb and .zd/.zpak dictionary bases. These formats are open, so you may download lots of free .zd dictionaries, handbooks, and encyclopedias from the Internet or create your own ones. Put .zd bases into /sdcard/dictan/ and they are ready for viewing! All extra info and the tools to create your own dictionaries are available at WWW.SOFTEX.INFO

The web-site also has the following free dictionaries in the 'Downloads' section (plus many others available over the section of 'ZD resources'):

English Wikipedia 2011

Russian Wikipedia 2015

Chinese Wikipedia 2015

Ukrainian Wikipedia 2010

Encyclopedia Britannica

Merriam-Webster

English Idioms

English Abbreviations

English Synonyms

Other various dictionaries