Primâtus, huius primátus, pen. pro. m. g. Pli. Chiefe rule and authoritie: primacie: the highest estate.Primatum dare alicui rei. Varro. To esteeme aboue al other things: to set most by: to giue the prick and price to.
Lewis and Short: Latin dictionary
prīmātus, ūs, m. [primas], the first place or rank, preference, pre-eminence, primacy (ante-class. and in post-Aug. prose): alii dant primatum bonis pratis, Varr. R. R. 1, 7, 10: primatum obtinere apud regem, Plin. 24, 17, 102, 165: donare aliquem primatu, id. 8, 5, 5, 12; 13, 12, 24, 79 (opp. secundatus).