Astrophysics.
(Doof the Br. astrophysique, der. of the g ? st?, Star, and the fr. physique, physical).
1. f. part of astronomy that studies the physical properties of celestial bodies, such as brightness, size, mass, temperature and composition, as well as its origin and evolution.
astrophysicist, ca.
(Of Astrophysics).
1. adj. belonger or relative to Astrophysics.
