primum mobile

Noun

In Ptolemaic astronomy, the outermost moving sphere in the geocentric model of the universe.

ریشه

From Latin, meaning 'first moved'.

مثال

• The Primum Mobile was thought to be the force that drove the motion of the planets.
• In Dante's Divine Comedy, the Primum Mobile is the ninth and highest heaven.
• The concept of the Primum Mobile is now obsolete in modern astronomy.