岩波国語辞典
First edition : 1963
Latest edition : 2019 (8th edition)
Publisher : 岩波書店
Word count : 67.000
Nickname : 岩国
As is stated in the preface :
「新しい語、新しい意味・用法については、他の辞書に比べて若干慎重な姿勢をとり、十分に定着したと判断されるものを掲載するようにしている」
The dictionary takes quite a cautious stance with regards to new words as well as new meanings and usages compared to most other dictionaries. They choose to only include new words that they deem to be well established. Which is completely the opposite editorial decision to the 三国. This is reflected both by the number of entries for new words, as well as the relatively sparse entries with katakana headings.
Some people would read this and consider this to be a dictionary that is outdated from the very moment it is published, but it isn’t the case that they don’t consider new words (often times, when a new word is included they will even mention the first usage, so this indicates that they are paying close attention!), they are just on the conservative side when it comes to actually including them.
Perhaps due to this conservative stance, the image that the 岩波国語辞典 is that of an ordinary, serious dictionary. It is however not the case, this is a very high quality dictionary. They look at the Japanese language with a keen eye, and the editor’s views on the matter shine through quite strongly.