Origin of imprimisMiddle English inprimis from Classical Latin in primis, literally , among the first from in, among + primis, ablative plural of primus, first: see prime
Origin of imprimisMiddle English in primis from Latin in prīmīs in among ; see in- 2. prīmīs ablative pl. of prīmus first ; see per1 in Indo-European roots.
- In the first place (used to introduce a list of items or considerations).
Latin imprimis (“firstly”)