in·vi·ta·to·ry 
(ĭn-vītə-tôr′ē)
(ĭn-vītə-tôr′ē)n. pl. in·vi·ta·to·ries
A psalm or other piece sung as an invitation to prayer in church services, especially at the opening of matins in the Roman office.
adj.
Constituting or containing an invitation.
[Middle English invitatorie, from Medieval Latin invītātōrium, from Late Latin invītātōrius, inviting, from Latin invītātus, past participle of invītāre, to invite.]
- Indo-European root: pelə-
- Indo-European root: pelə-
- Indo-European root: penkwe
- Indo-European root: pent-
- Indo-European root: per
- Indo-European root: per-
- Indo-European root: per-
- Indo-European root: per-
- Indo-European root: per-
- Indo-European root: perd-
- Indo-European root: perkwu-
- Indo-European root: perə-
- Indo-European root: perə-
- Indo-European root: pes-
- Indo-European root: pet-
- Indo-European root: petə-
- Indo-European root: peuk-
- Indo-European root: peuə-
- Indo-European root: pezd-
- Indo-European root: plat-
- Indo-European root: plek-
- Indo-European root: pleu-
- Indo-European root: plāk-
- Indo-European root: plāk-
- Indo-European root: pneu-