Kenkyūsha's New Japanese-English Dictionary

First published in 1918, Kenkyūsha's New Japanese-English Dictionary (新和英大辞典, Shin wa-ei daijiten^?) has long been the largest and most authoritative Japanese-English dictionary. Translators, scholars, and specialists who use the Japanese language affectionately refer to this dictionary as the Green Goddess or (GG) because of its distinctive dark-green cover.

The fifth edition of Kenkyūsha's New Japanese–English Dictionary, published in 2003 (colloquially "GG5"), is a volume with almost 3,000 pages; it contains about 480,000 entries (including 130,000 Japanese headwords, 100,000 compound words, and 250,000 example phrases and sentences), nearly all of which are accompanied by English translations. The editors in chief of the fifth edition are Watanabe Toshiro, Edmund R. Skrzypczak, and Paul Snowden.

Besides the print edition, the dictionary is also available on CD-ROM (EPWING format), online, and in electronic dictionary and iPhone versions. Electronic dictionaries that contain the fifth edition are generally flagship models. They include the Canon Wordtank G70, the Seiko SR-E10000 (the first electronic dictionary with GG) and SR-G10000, and the Casio "University Student" series (XD-D9800 in 2012) and "Professional" series (XD-D10000 in 2012).

There is also a companion English-Japanese dictionary, currently in its 6th edition, which contains 260,000 headwords.

In 1918, the publication of the first edition of Kenkyūsha's New Japanese–English Dictionary, Takenobu's Japanese–English Dictionary (武信和英大辞典, Takenobu wa-ei daijiten), named after the editor-in-chief, Takenobu Yoshitarō (武信 由太郎), was a landmark event in the field of lexicography in Japan. Completed in under five years with the assistance and support of leading scholars in the field, and published when Kenkyūsha (研究社) was still a minor academic publishing company, the Takenobu was the most authoritative Japanese–English dictionary of the time, and cemented Kenkyūsha's reputation in the field of academic publishing.

...
Wikipedia