[ˈneɡətivizəm]
违拗症：做一般人在相似情况下相反的行为，或做出恰恰相反于他人让他做的，以及正常欲念所要他做的病态倾向；例如在紧张型精神分裂症时，常遇到当让病人举起手时，他却感到被迫将手垂下；让他伸开手掌，他却攥起拳来- Meckel's band (ligament),cavity (space),ganglion
- Meckel's cartilage (rod),diverticulum,plane,syndrome
- meclizine hydrochloride
- meclocycline
- meclofenamate
- meclofenamic acid
- meclofenoxate
- Meclomen
- mecloqualone
- mecobalamine
- mecocephalic
- meconate
- meconic acid
- meconiorrhea
- meconium
- mecrylate
- mecystasis
- M. E. D
- Medawar
- medazepam hydrochloride
- Medex
- medi
- media
- mediad
- medial