refan verb 6noun 1forms 3 verb6 •To fan again. •To retrofit an airplane engine with a turbofan that reduces noise.A new engine would have to be markedly superior not only to the JT8D but also to a JT8D or Rolls-Royce Spey refanned to a higher bypass ration. — 1998 •To cause air to blow on again.The heat was great, and the nights were passed in fanning oneself to sleep, awaking, and refanning to sleep again. — 1872 •(figurative) To revive or reinvigorate. •To spread again. •To winnow again. noun1 •An airplane engine that has been refanned.In considering the relative merits of SAM versus refan in our rule-making efforts, we have considered the following factors as being of primary significance. — 1975 formsrefanned · refanning · refans