Definition from macmillandictionary.com
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On one occasion we had to walk all the way home.
I’ll let you off on this occasion.
We tested a similar product on an earlier occasion.
He continues to work with us on occasion.
Her promotion was an occasion for great celebration.
This is not the occasion for such a detailed analysis.
Victory provided him with the occasion for declaring himself king.
This will be an occasion for us all to make a new start.
The first opening of a Scottish parliament for 300 years was a historic occasion.
The dress is perfect for a special occasion.
We should mark the occasion in some way.
There was a celebration on the occasion of the school’s anniversary.
I’ve had no occasion to complain about their service.
His mistake was the occasion of much amusement.