A person’s or thing’s first appearance before society or another audience; one’s “maiden voyage”.
To make one's début.
The act of flowing or proceeding (of something, quality, or feeling) from a source or origin.
That which issues, flows, or proceeds from any object as a source; efflux; an effluence.
The generation of the Son and the procession of the Holy Spirit, as distinct from the origination of created beings.