Medicine. The condition of being open or unobstructed (as either a normal or an abnormal condition).
| 单词 | θ102538 | 
| 释义 | the world > space > relative position > condition of being open or not closed > 			[noun]		 > and unobstructed (2)		 patency1843 Medicine. The condition of being open or unobstructed (as either a normal or an abnormal condition). clearness1869 Freedom from anything obstructive. | 
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