- 官能症 guānnéngzhèng functional diseasea medical condition involving an impairment in the normal physiological function of a body organ without an apparent structural or organic cause
- 官能团 guānnéngtuán functional groupThe atoms or group of atoms in an organic molecule that determine its chemical properties, such as a double bond or a carboxyl group.
- 官能基 guānnéngjī functional groupAn atom or group of atoms within an organic compound that determines its chemical properties.
- 神经官能症 shénjīngguānnéngzhèng neurosisA general term for psychological disorders involving a temporary loss of function in the cerebral cortex, often characterized by anxiety, obsession, or fatigue; also called [[神经症|神經症|shen2 jing1 zheng4]], [[精神官能症|精神官能症|jing1 shen2 guan1 neng2 zheng4]], or [[精神症|精神症|jing1 shen2 zheng4]].
- 精神官能症 jīngshénguānnéngzhèng neurosisA collective term for psychological disorders caused by mental factors that lead to temporary dysfunction, often involving anxiety, phobias, or obsessive-compulsive behaviors.
- 衰弱性精神官能症 shuāiruòxìngjīngshénguānnéngzhèng neurastheniaa psychological condition characterized by fatigue, headache, and irritability, often associated with a nervous breakdown
