/ ˈdaɪktɪk; NAmE ; ˈdeɪktɪk/ adjective
( linguistics ) relating to a word or expression whose meaning depends on who says it, where they are, who they are talking to, etc., for example 'you', 'me', 'here', 'next week'.
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WORD ORIGIN
early 19th cent.: from Greek deiktikos , deiktos capable of proof, from deiknunai to show.