Definition of: occasion

(ə·kā′zhən) noun
1. A particular event, or juncture of events, considered simply as exciting notice or interest; especially, an important event or celebration.
2. An event or juncture of affairs that presents some reason, motive, or opportunity for action; an opportunity permitting or a reason requiring action; cause: no occasion for haste.
3. A determinative condition, as opposed to the main or principal cause.
4. A need or exigency.
5. plural Obs. Needs.
6. Obs. Any matter of business requiring attention. See synonyms under CAUSE, OPPORTUNITY.
—by occasion of In consequence of; by reason of.
—on occasion On suitable opportunity; at need; now and then.
—to take occasion To avail oneself of the opportunity.
—v.t. To cause or bring about; cause accidentally or incidentally. See synonyms under MAKE, PRODUCE. [<L occasio, -onis a falling towards, an opportunity <occidere fall down <ob- towards, down + cadere fall]