from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The study of lighthouses, or other forms of light-signalling.
from the GNU version of the Collaborative International Dictionary of English
- n. The art or science which treats of lighthouses and signal lights.
from The Century Dictionary and Cyclopedia
- n. The art or science of directing the course of ships by means of light-signals from the shore.
From Latin Pharos or its source Ancient Greek Φάρος + -logy. (Wiktionary)