basilica
In ancient Roman architecture a large oblong type building used as hall of justice and public meeting place. The roman basilica served as a model for early Christian churches.

focal height
Τhe height of the lighhouse's lantern above sea level.

range of light
The distance in nautical miles at which the lantern light is visible to an observer with a medium vision power, when being seen from the lighthouse’s focal (horizontal) level. The range of light is dependent on the lantern, the observer’s power of vision and the air transparency at the time of observation.