開通 (かいつう)opening (of a new road, railway, etc.); going into operation (e.g. telephone communication); beginning services

opening (of a new road, railway, etc.); going into operation (e.g. telephone communication); beginning servicesnoun (common) (futsuumeishi), noun or participle which takes the aux. verb suru
reopening (e.g. a road to traffic); resumption of servicesnoun (common) (futsuumeishi), noun or participle which takes the aux. verb suru

開通, its kanji, and other words that share them.Open this graph

Kanji in 開通

開発かいはつdevelopment; exploitation
公開こうかいopening to the public; making available to the public
展開てんかいdevelopment; evolution
開催かいさいholding (a conference, exhibition, etc.); opening
開始かいしstart; commencement
開放かいほうopening (a door, window, etc.); leaving open
再開さいかいreopening; resumption
開幕かいまくraising the curtain
見通しみとおしunobstructed view; perspective
通信つうしんcorrespondence; communication
交通こうつうtraffic; transportation
共通きょうつうcommon; shared
普通ふつうnormal; ordinary
通常つうじょうusual; ordinary
通産省つうさんしょう(former) Ministry of International Trade and Industry (now Ministry of Economy, Trade and Industry); MITI
通貨つうかcurrency

See how 開通 connects to the rest of Japanese.