What is "pharology"

Pharology \Pha*rol"o*gy\, n. [Gr. ? a lighthouse + -logy.] The art or science which treats of lighthouses and signal lights.

n. The study of lighthouses, or other forms of light-signalling.

Pharology is the scientific study of lighthouses and signal lights, their construction and illumination. The variation pharonology is occasionally attested. Those who study or are enthused by lighthouses are known as pharologists.