The definition of deictic is something that proves a point, or is a word whose definition is determined by how it is used in a sentence.(adjective)
See deictic in Webster's New World College Dictionary
Origin: Gr deiktikos < deiktos, capable of proof < deiknynai, to prove; akin to L dicere: see diction
See deictic in American Heritage Dictionary 4
Origin: Greek deiktikos
Origin: , from deiktos, able to show directly
Origin: , from deiknunai, to show; see deik- in Indo-European roots.
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