瞬しゅん間かん湯ゆ沸わかし器きMeaningsNoun1. instantaneous water heater; on-demand water heaterShow all meanings (1 more)Other spellings瞬間湯沸しゅんかんゆわかし器きUsage share unknownKanji used瞬blink間interval湯hot water沸heat until boiling point器instrumentPitch accentしゅんかんゆわかしきComposed of瞬しゅん間かんmoment; instant; second; just then; right at that moment; at that instant; for a moment; for an instant; momentarilyNoun湯ゆ沸わかし器きwater heater; water boilerNoun