Pronunciation: (gal"u-lā'ō, -lē'ō; for 1 also It. gä"lē-le'ô), [key]
1. (Galileo Galilei), 1564–1642, Italian physicist and astronomer.
2. Aerospace.a U.S. space probe designed to take photographs and obtain other scientific information while orbiting the planet Jupiter.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.