noun, noun or participle which takes 'suru', intransitive verb
being in one's hometown; staying in one's home area
General modern use for residing or being present in one's hometown or home region. Often used in contrast to being away for work or study.
彼は今、在国中で、来月また海外へ行く。
He is currently in his hometown and will go abroad again next month.
在国して
While I'm staying in my hometown, I plan to spend time at my parents' house.
noun, noun or participle which takes 'suru', intransitive verb
being in one's domain (historical, of a daimyo or retainer)
Historical term from the Edo period. Refers to a daimyo or his retainers residing in their own domain, as opposed to being in Edo under the sankin-kōtai system.
江戸時代、大名が在国する期間は限られていた。
During the Edo period, the time a daimyo could spend in his domain was limited.