galactic year (English, noun)
expansion: galactic year (plural galactic years)
Senses:
topics: astronomy
natural-sciences
glosses: The time taken for the Solar System to orbit around the center of the Milky Way Galaxy, estimated to be from 225 to 250 million years.
topics: astronomy
natural-sciences
glosses: The time taken for a celestial body to complete a quasi-orbit in a galaxy.
tags: broadly
Forms:
form: galactic years
tags: plural