①视象倒反：一种视物如反(有如镜像)的感觉异常；②读字倒反：和小孩一般智力不相称的阅读困难，开始时混淆相似而方向相反的字母，如b和d及q和p，且有反向阅读的倾向- extracerebral
- extracorporal
- extracorporeal
- extracorpuscular
- extracorticospinal
- extracranial
- extract
- extraction
- extractive
- extractor
- extractum
- extracystic
- extradural
- extraembryonic
- extraepiphyseal
- extragenital
- extrahepatic
- extraligamentous
- extramalleolus
- extramastoiditis
- extramedullary
- extrameningeal
- extramitates
- extramural
- extraneous