In mathematical morphology, opening is the dilation of the erosion of a set A by a structuring element B:

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  1. An act or instance of making or becoming open.
    The daily openings of the day lily bloom gives it its name.
    He remembered fondly the Christmas morning opening of presents.
  2. Something that is open.
    A salamander darted out of an opening in the rocks.
    He slipped through an opening in the crowd.
  3. An act or instance of beginning.
    There have been few factory and store openings in the US lately.
    Their opening of the concert with Brass in Pocket always fires up the crowd.
  4. Something that is a beginning.
    1. The first performance of a show or play by a particular troupe.
      They were disappointed at the turnout for their opening, but hoped that word would spread.
    2. The initial period a show at an art gallery or museum is first opened, especially the first evening.
    3. The first few measures of a musical composition.
    4. The first few moves in a game of chess.
      John spends two hours a day studying openings, and another two hours studying endgames.
  5. A vacant position, especially in an array.
    Are there likely to be any openings on the Supreme Court in the next four years?
  1. A time available in a schedule.
    If you'd like to make a booking with us, we have an opening at twelve o'clock.
    The only two-hour openings for the hockey rink are between 1AM and 5AM.
  2. An unoccupied employment position.
    We have an opening in our marketing department.
  1. An opportunity, as in a competitive activity.




The above text is a snippet from Wiktionary: opening
and as such is available under the Creative Commons Attribution/Share-Alike License.

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