The scientific study of lighthouses and signal lights.
| 单词 | θ206403 | 
| 释义 | society > travel > travel by water > vessel, ship, or boat > buoys, marks, or lighthouses > 			[noun]		 > object on land or sea as guide > light beacon or lighthouse > art or science of lighthouses (1)		 pharology1847 The scientific study of lighthouses and signal lights.  | 
	
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