a place, building, or object that is accessible is easy to reach or get into [≠ inaccessible]:
The island is only accessible by boat.
There is a church which is easily accessible from my home.
easy to obtain or use
the need for a health service that is accessible to all
Computers should be made readily accessible to teachers and pupils.
someone who is accessible is easy to meet and talk to, even if they are very important or powerful:
I think that you'll find she's very accessible.
a book, poem, painting etc that is accessible is easy to understand and enjoy
He wants his music to be accessible to everyone.
—accessibility noun [uncountable]