Introduction of Mosarrahat ul-asmā’ dictionary

Mosarrahat ul-asmā’ is a bi-lingual dictionary‚ Arabic to Persian‚ written by Lotfullah ebn abi Yousef Halimi‚ ottoman lexicographer and philologist of the ninth and beginning of the tenth century AH (15 century AD). This book written in 872 AH (1466 AD) ‚ has nearly 17112 headwords, considering some of their Turkish equivalents (nearly 1180 headwords), we can somehow call it a tri-lingual Arabic to Persian and Turkish dictionary. Considering to emersion of this kind of dictionaries in the ninth-century‚ we can enumerate Mosarrahat ul-asmā’ as a pioneer in this field.In addition to carrying a variety of definition language, we can mention other features of this book including: presenting a comprehensive and complete definition of some headwords which is distincting from similar dictionaries, recording Arabization (to indicate pronunciation) of some of the Persian and sometimes Turkish equivalents that display outdated pronunciation of words, their local dialect or Turkish dialect, Using some rare and alternative pronunciation of words that represent their phonetic changes, Using rare and compound words, recording specialized medical words.