Oxford English Dictionary wrote:deictic, a. and n.
Directly pointing out, demonstrative; in Logic, applied, after Aristotle, to reasoning which proves directly, as opposed to the elenctic, which proves indirectly. Also in Grammar and as n.
1828 WHATELY Rhet. I. ii. Â§1 Thirdly into â€˜Directâ€™ and â€˜Indirectâ€™ (or reductio ad absurdum)â€”the Deictic and Elenctic of Aristotle. 1876 T. LE M. DOUSE Grimm's L. Â§31. 66 In meaning, the word originally covered all deiktic action irrespective of direction. 1922 O. JESPERSEN Language xix. 383 The relation between a demonstrative pronoun or a deictic particle and genitival function. 1964 [see ANAPHORA 1b]. 1970 Archivum Linguisticum I. 6 The only exceptions to this restriction are the gen. dat. sg. fem. and the gen. pl. of the deictic theser.
Indication, pointing out. Cf. DEICTIC a.
1949 Archivum Linguisticum I. II. 181 His analysis of the basic personal pronouns in terms of deixis. 1964 R. A. HALL Introd. Ling. xxvi. 164 The function of pointing out is often called deixis. 1966 G. N. LEECH Eng. in Advertising xviii. 157 The definite article is characteristically employed in advertising in this sense of absolute deixis.
but in many languages
they double as discourse deictics, referring not to
concrete objects but to words, phrases and propositions
mentioned in speech.
blutoonwithcarrotandnail wrote: Somebody mentioned
this in another message. Demonstratives refer to something
already previously mentioned.
Maybe this is meant by
the quote from above which says, "refering not to concrete
objects but to words mentioned in the speech."