Indexical (adj)
in-deks-ik-al
Relating to or denoting a word or expression whose meaning is dependent on the context in which it is used (such as here, you, me, that one there, or next Tuesday).
Early 20th century coined in this sense by the American philosopher C. S. Peirce.
Example sentences
“The problem was the language was so indexical, if you hadn’t been there then you couldn’t follow the written log. ”