Definitions

1. noun

a famous Italian astronomer and physicist of the Renaissance, known for his work in supporting the Copernican theory and for his experiments with pendulums.

“Galileo’s discovery of four moons orbiting Jupiter was a major breakthrough in astronomy.”

2. proper noun

Galileo Galilei, a famous Italian astronomer and physicist.

“Galileo Galilei made significant contributions to our understanding of the universe.”