Where does “invitatory” come from?

invitatory (English) comes from Latin invitatorius, from Latin -tōrius, from Latin -tor, from Proto-Italic -tōr, from Proto-Indo-European -tōr, from Proto-Indo-European -tor-s.

invitatory (English): Of or pertaining to an invitation; A psalm sung,...

Definitions

Of or pertaining to an invitation; A psalm sung,...

Ancestry of “invitatory”, step by step

Step	Language	Word	Meaning
1	Latin	invitatorius	inviting
2	Latin	-tōrius	ory
3	Latin	-tor	-er
4	Proto-Italic	-tōr	Forms agent nouns to verb stems
5	Proto-Indo-European	-tōr	Derives agent nouns from verbs, denoting someone...
6	Proto-Indo-European	-tor-s	—

Every word from Proto-Indo-European -tor-s →Every word from Latin -tor →Every word from Latin -tōrius →