Wordnet 3.0
ADJECTIVE (1)
1.
conveying an invitation;
- Example: "a brief invitatory note"
The Collaborative International Dictionary of English v.0.48:
Invitatory \In*vi"ta*to*ry\, a. [L. invitatorius: cf. F.
invitatoire.]
Using or containing invitations.
[1913 Webster]
The "Venite" [Psalm xcv.], which is also called the
invitatory psalm. --Hook.
[1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Invitatory \In*vi"ta*to*ry\, n.; pl. Invitatories. [LL.
invitatorium: cf. F. invitatoire.]
That which invites; specifically, the invitatory psalm, or a
part of it used in worship.
[1913 Webster]
WordNet (r) 3.0 (2006):
invitatory
adj 1: conveying an invitation; "a brief invitatory note"