This site will be taken down March 31st, 2026.

This was not an easy decision to make. For the last couple years, I have been struggling to find motivation for this site and to keep up with basic maintenance and security updates. With the rise of AI and more sophisticated tools, the usefulness of sites like this is questionable and traffic has nose-dived. I just don't have it in me to keep doing this. Thank you all for 10 years of support!

Zach

拡張子

Reading

Kana: かくちょうし
Romaji: kakuchōshi
Kana
Romaji

Definition

1

(filename) extension

Kanji

Readings: カク、 コウ、 ひろ.がる、 ひろ.げる、 ひろ.める
Meanings: broaden, extend, expand, enlarge
Readings: チョウ、 は.る、 -は.り、 -ば.り
Meanings: lengthen, counter for bows & stringed instruments, stretch, spread, put up (tent)
Readings: シ、 ス、 ツ、 こ、 -こ、 ね
Meanings: child, sign of the rat, 11PM-1AM, first sign of Chinese zodiac

Example Sentence

ウィンドウズは、拡張子(かくちょうこ)()けないとファイルを()んでくれない。
➥With Windows, you have to have extensions or it won't read your files.
Full Entry➤