[noun](phonology,orthography,grammar) the sixth row of the 五十音図(literally “table of the fifty sounds”), consisting of the five kana は/ハ(ha), ひ/ヒ(hi), ふ/フ(fu), へ/ヘ(he) and ほ/ホ(ho)
Alternative spelling ハ行
(This term, 波行, is an alternative spelling of the above term.)