| yang deficiency | In the yin-yang system of philosophy and medicine, a lack of vital energy (called yangxu in chinese). It manifests itself in various systemic and organic diseases. (12 Dec 1998) |
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| yanggona | A Fijian drink made from the powdered root of Piper methysticum (family Piperaceae); excessive drinking of it causes a state of hyperexcitability and a loss of power in the legs; chronic intoxication induces roughening of the skin and a state of debility. See: methysticum. Synonym: kava, yanggona. Origin: Fijian name (05 Mar 2000) |
| Yangtze oedema | <dermatology, microbiology> A migrating oedema, or creeping eruption, caused by cutaneous infection by larvae of Gnathostoma spinigerum. Synonym: Yangtze oedema. (05 Mar 2000) |
| Yangtze Valley fever | Schistosomiasis caused by schistosoma japonicum. It is endemic in the far east and affects the bowel, liver, and spleen. (12 Dec 1998) |
| yin-yang | In chinese philosophy and religion, two principles, one negative, dark, and feminine (yin) and one positive, bright, and masculine (yang), from whose interaction all things are produced and all things are dissolved. As a concept the two polar elements referred originally to the shady and sunny sides of a valley or a hill but it developed into the relationship of any contrasting pair: those specified above (female-male, etc.) as well as cold-hot, wet-dry, weak-strong, etc. It is not a distinct system of thought by itself but permeates chinese life and thought. A balance of yin and yang is essential to health. A deficiency of either principle can manifest as disease. (encyclopedia americana) (12 Dec 1998) |
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