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agnātĭo (adg-), ōnis, f. [agnatus]. 
- I.  The relationship of the agnatus, consanguinity on the father’s side (v. agnatus), Cic. Leg. 1, 7, 23 Creuz; 1, 8, 24: jura agnationum, id. de Or. 1, 38, 173.
 
- II.  As a verbal subst. from agnascor, I. A. 
 
- A.  A being born after the last will or the death of the father, Dig. 40, 5, 24, § 11; Cod. Just. 3, 8, 1.
 
- B.  A growing on or to a thing (acc. to agnascor, II.), App. Herb. 59.