What is the meaning of Istic?

this same, this very; those, etc.

that of yours, that mentioned earlier by or related to you, that beside you

this same, this very

that of yours, that mentioned earlier by or related to you, that beside you

there, in that (very) place, here (chiefly used in direct speech to address the place of one being talked to)

herein, in this affair, on this occasion, on that/your side

Source: wiktionary.org