i Register
In some senses, osculatory is marked as formal. Watch for register when choosing this word.
noun
A religious tablet, usually carrying a representation of Christ or the Virgin Mary, which is kissed by the priest during the Mass ("kiss of peace"); it is then passed to others at the mass who also kiss it.
adj
Of or relating to kissing.
On this the two ladies went through the osculatory ceremony which they were in the habit of performing, and Mrs. Pendennis got a great secret comfort from the little quarrel—for Laura’s confession seemed to say, “That girl can never be a wife for Pen, for she is light-minded and heartless, and quite unworthy of our noble hero.[…]”
Relating to, or having the properties of, an osculatrix; capable of osculation.
A circle may be osculatory with a curve, at a given point.