planetuleとは 意味・読み方・使い方

名詞

planetule (plural planetules)

1. A little planet.
   • 1836, William Daniel Conybeare, An Elementary Course of Theological Lectures, in Three Parts:

     At the surface of Mars, for instance, the gravity is only one third that at our own surface, at the moon one-sixth, and in the singular little planetules grouped between the orbits of Mars and Jupiter, probably not more than one-twentieth.