Omitted Character
Omitted Letter
noun
You've got an escaped letter, in other words, an omitted character or omitted letter.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
あっ、ヤバい。一字脱字がある！
Oh, no. There's one missing character!
この記事の中の、どこに脱字があるか分かりますか？
Can you see where the missing characters are in this article?
誤字脱字を見つけたら、遠慮せずに教えてくださいね。
Don’t be afraid to let me know if you find misspelled or missing words, please.