Dictionary

A Dictionary is a reference book containing words classed alphabetically and giving information about spelling, etymology, connotation, regional use, equivalent phrase in another language, recommended use or criticized use. Dictionaries are commonly used by language specialists such as writers and translators and also by the general public. Dictionary can have a general purpose and be comprehensive or have a narrower scope such as slang, rhymes or images (visual dictionary).

History

• In the 1st century, Greeks wrote list of words that had changed over time.
• In the 2nd century, Julius Pollux wrote his Onomasticon. It was not exactly a comprehensive book and it many ways it resembled an encyclopedia. Today, only fragments of this book remain.
• From the Early Middle Ages, bilingual and multilingual dictionaries started to be published in Europe.
• The computer era now makes it possible to use a dictionary on another format than paper either as on-line dictionary and off-line dictionary.

Public Domain

Public domain lasting an authors' life plus fifty years in some countries (Canada) and seventy years in others, many of them can be reused or republished without copyright infringement. This is why some of these are available (the 1913 Webter) or being made available by volunteer groups such as Project Gutenberg's Distributed Proofreaders.