na-adjective
Describes something that is easy to approach, enter, use, or understand, often in the context of physical access, information, or services. Used as a な-adjective.
この建物は車椅子でもアクセシブルです。
This building is accessible even by wheelchair.
ウェブサイトをもっとアクセシブルにする必要がある。
We need to make the website more accessible.