Definition: Meaning of, Galileo in English to English dictionary.
Pronunciation:/ ˌɡalɪˈleɪəʊ /
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(1564-1642) an Italian ASTRONOMER (= a scientist who studies the stars), MATHEMATICIAN, and PHYSICIST whose many discoveries had a great influence on modern science. He discovered that the planets move around the Sun, and that if you drop objects of different weights in a VACUUM, they fall at the same speed.
1564-1642 italian astronomer and mathematician who was the first to use a telescope to study the stars; demonstrated that different weights descend at the same rate; perfected the refracting telescope that enabled him to make many discoveries