relating to a word or an expression whose meaning depends on who says it, where they are, who they are talking to, etc., for example ‘you’ , ‘me’, ‘here’, ‘next week’(词语或表达方式)指示的(如 you、me、here、next week 等) Word Originearly 19th cent.: from Greek deiktikos, deiktos ‘capable of proof’, from deiknunai ‘to show’.