Definitions
1.NounA favorable opportunity; a convenient or timely chance. .mw-parser-output .defdate{font-size:smaller}"At this point, she seized the occasion to make her own observation."
2.NounThe time when something happens."On this occasion, I'm going to decline your offer, but next time I might agree."
3.NounAn occurrence or state of affairs which causes some event or reaction; a motive or reason."I had no occasion to feel offended, however."
4.NounSomething which causes something else; a cause.
5.NounAn occurrence or incident.
6.NounA particular happening; an instance or time when something occurred."I could think of two separate occasions when she had deliberately lied to me.; a momentous occasion in the history of South Africa"
7.NounA need; requirement, necessity."I have no occasion for firearms."
8.NounA special event or function."Having people round for dinner was always quite an occasion at our house."
9.NounA reason or excuse; a motive; a persuasion.
10.VerbTo cause; to produce; to induce"It is seen that the mental changes are occasioned by a change of polarity."