御中[onaka] stomach
御話中[ohanashichuu] busy (phone)
アル中[aruchuu] alcoholism
π中間子[paichuukanshi] pi meson
暗中[anchuu] in the dark

暗中摸索[anchuumosaku] groping in the dark
意中[ichuu] one's mind
意中の女[ichuunoonna] sweetheart
井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
一日中[ichinichijuu] all day long

共産党中央委員会[kyousantouchuuouiinkai] Central Committee of the Communist Party
震央[shinou] epicentre (of an earthquake)
中央[chuuou] centre
中央アジア[chuuouajia] central Asia
中央委員会[chuuouiinkai] central committee

中央計画[chuuoukeikaku] centralized planning
中央口[chuuouguchi] central entrance
中央集権[chuuoushuuken] centralized authoritarian rule
中央集権化[chuuoushuukenka] centralization of power
中央処理装置[chuuoushorisouchi] central processing unit