/euh dap"teuhr/ , n.
1. a person or thing that adapts.
2. a connector for joining parts or devices having different sizes, designs, etc., enabling them to be fitted or to work together.
3. an accessory to convert a machine, tool, or part to a new or modified use.
4. Computers. See expansion card .
Also, adaptor .
[ 1795-1805; ADAPT + -ER 1 ]