noun
ha-row of the kana syllabary
Refers to the row of the gojūon table that contains the kana は (ha), ひ (hi), ふ (fu), へ (he), ほ (ho). Used in discussions of Japanese phonology, spelling, and verb conjugation.
ハ行の音は、歴史的に変化してきた。
The sounds of the ha-row have changed historically.
動詞の活用で、ハ行四段活用というのがあります。
In verb conjugation, there is something called ha-row quadrigrade conjugation.
Compound of ハ (ha), the first kana in the row, and 行 (gyō, 'row'), following the standard naming pattern for rows of the gojūon table.