- Main Entry:
- ac·cus·tom

- Pronunciation:
-
\ə-ˈkəs-təm\
- Function:
- transitive verb
- Etymology:
- Middle English, from Anglo-French acostomer, from a- (from Latin ad-) + custume custom
- Date:
- 15th century
: to make familiar with something through use or experience
—
ac·cus·tom·ation
\-ˌkəs-tə-ˈmā-shən\
noun