The new edition of the best-selling Kojien dictionary to go on sale next month will be the first with nuclear power terms selected by a dedicated editor in its 62-year history, its publisher says.

The dictionary, covering some 240,000 words, was first published in 1955 and is revised every 10 years or so. Publisher Iwanami Shoten decided to assign a dedicated editor to review nuclear terminology for the seventh edition because people have become more familiar with such words since the March 2011 Fukushima disaster.

Some of the terms are frequently used by the media and are commonly understood, but many of those in the current edition are defined using technical jargon.