[əˈkeɪʒn], (Noun)

Definitions:
- a particular event, or the time at which it takes place
(e.g: on one occasion I stayed up until two in the morning)

- reason; cause
(e.g: it's the first time that I've had occasion to complain)


Phrases:
- on occasion
- rise to the occasion
- take occasion

Origin:
late Middle English: from Latin occasio(n-) ‘juncture, reason’, from occidere ‘go down, set’, from ob- ‘towards’ + cadere ‘to fall’

[əˈkeɪʒn], (Verb)

Definitions:
- cause (something)
(e.g: something vital must have occasioned this visit)


Phrases:
- on occasion
- rise to the occasion
- take occasion

Origin:
late Middle English: from Latin occasio(n-) ‘juncture, reason’, from occidere ‘go down, set’, from ob- ‘towards’ + cadere ‘to fall’