Which moons are called "Galilean moons"?
It is a collective description of all moons
The four largest moons of Jupiter were discovered in 1610 by Galileo Galilei and are today known as the Galilean moons. From the end of the 19th century, dozens of much smaller Jovian moons have been discovered and have received the names of lovers or daughters of the Roman god Jupiter or his Greek equivalent Zeus.