from The American Heritage® Dictionary of the English Language, 4th Edition
- adv. In the first place.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. In the first place (used to introduce a list of items or considerations).
from the GNU version of the Collaborative International Dictionary of English
- adv. In the first place; first in order.
from The Century Dictionary and Cyclopedia
- In the first place; first in order: a word introducing a series of specified particulars, as in the beginning of a will.
Middle English in primis, from Latin in prīmīs : in, among; see in-2 + prīmīs, ablative pl. of prīmus, first; see per1 in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin imprimis ("firstly") (Wiktionary)