in or to a foreign country or countries
After finishing university, Mia plans to study abroad for a year.
Sam's parents moved abroad when he was ten.
✦ From Middle English abrode, contraction of the phrase on brode meaning “at large, out of doors,” later generalized to “out of the country.”
(formal) widely spread or noticeable in many places
Rumors were abroad that the company would close.
Fear is abroad after the sudden power outage.
✦ An extension of the earlier sense “out and about,” later applied figuratively to intangible things being ‘out in the world’.