aphtha
aphtha[ˈafθə](pl. aphthae ˈafθi)- (Medicine)a small ulcer occurring in groups in the mouth or on the tongue
(医)口疮,舌疮,口腔溃疡
■[mass noun]a condition in which such ulcers occur
口疮症状
派生aphthousadjective语源- mid 17th cent.: via Latin from Greek, connected with haptein 'set on fire'
考试词汇表