Noun
handakuten (plural handakuten)
A semi-voiced diacritic (゜) used with Japanese kana to change a /h/ to a /p/.
Synonym: (colloquial) maru
Hiragana with dakuten or handakuten follow the gojūon kana without them, with the yōon kana following. Source: Internet
In this scheme, diacritics (dakuten and handakuten) are separate characters. Source: Internet
Katakana with dakuten or handakuten follow the gojūon kana without them. Source: Internet
This block also includes the half-width dakuten and handakuten. Source: Internet
Optional rules * Dakuten and handakuten may be ignored or added. Source: Internet
Other, arbitrary combinations with U+309A handakuten are also possible, of course. Source: Internet