noun
monsoon
mon-SOON/ˌmɑːnˈsuːn/
A seasonal wind pattern often bringing prolonged heavy rain.
The summer monsoon brings weeks of heavy rain to the region.

Etymology
The Arabic word meant an annually recurring season, including a suitable time for sailing. It became associated with seasonal Indian Ocean winds; the heavy rain brought by India's summer monsoon added the familiar rainy-season connection.
In context
the wind coming from the southwest brings the monsoon it blows for 4 months this air mass becomes heavy with humidity as it travels above the ocean and brings rain when it reaches the continent
More examples
- Farmers depend on the monsoon to water their rice fields.
- The monsoon winds reverse direction as the seasons change.
- Weak monsoons can leave reservoirs low for months.
Forms
monsoon · monsoons
monsoonal adjective — Relating to seasonal winds and rains.
Similar words
- rainy season
- Names the wet period, not the seasonal wind pattern itself.