突とっ発ぱつ性せい難なん聴ちょうとっぱつせいなんちょうMeanings1nounsudden deafness; sudden sensorineural hearing loss (SSHL)medicine›Medical term for a rapid, unexplained hearing loss, typically in one ear. Often abbreviated as SD or SSHL in clinical contexts.突とっ発ぱつ性せい難なん聴ちょうは早そう期