1. Noun, Suru verb, Intransitive verb

   1.

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

2. 2.

   reopening (e.g. of a road to traffic); resumption of services

Example sentences

• 不通区間の開通の見込みはまだない。

  There's no hope at this moment that the closed section will be reopened.

• 新しく開通した地下鉄で学校へ行くのに20分しかかからない。

  It only takes 20 minutes to get to school by the newly opened subway.