Outrageously Funny Word Dictionary :: Ptolemaian

👉 The term "ptolemaian" refers to a system or mechanism that is used in astronomy and navigation. It was developed by the ancient Greek astronomer Ptolemy, who devised it around 90 BCE. The system involved a set of three concentric circles called the ptolemaic system, which were based on the position of the Sun, Moon, and planets at different points in their orbits. The ptolemaic system was used for celestial navigation by astronomers

ptolemaian