English

indexic

From index + -ic.

Formed from index + -ic

Proto-Indo-European *deyḱ- ‘to point out’

Proto-Indo-European *déyḱeti ‘to be pointing out’

Proto-Italic *deikō ‘to show’

Latin dīcō ‘to say, indicate’

Latin index ‘discoverer, informer; forefinger’

English index

Today it means

adj indexical

Language periods are conventional ranges, not dates for this word.