ădoptātīcĭus — Lewis & Short
ădoptātīcĭus (not -tītĭus), a, um, adj.adopto,
I adopted, received in the place of a child; only in Plaut., Poen. 5, 2, 85:
Demarcho item ipse fuit adoptaticius,ib. 100. —Acc. to Festus, it signifies the son of one who is adopted: ex adoptato filio natus, p. 29 Müll.