火元 ひもと Meanings Noun origin of a fire Kanji 火 fire. Read as ひ. 元 source. Read as もと. Example sentences 火元は明らかでない。The origin of the fire is unknown. 火元はなに?What started the fire? 火元は何ですか?What is the origin of the fire? Common phrases 火元になる Jinuma: Japanese Dictionary · Word lists