[noun] [U]The official opening of the new school will take place next month.(UK) The opening hours of a business, such as bar, restaurant, shop or bank, are the times when it is open for people to use it.(UK) The opening time of a bar or pub is the time at which it opens.
OPENING
Meaning of OPENING in English
Cambridge English vocab. Кембриджский английский словарь. 2012