"Maybe it's better when you do it yourself, I didn’t enjoy it much when Dumbledore took me along for the ride."
-- Harry (HBP17)
Side-Along Apparition is a form of instant magical travel in which the Apparator touches someone else, such as a child too young to Apparate, and Apparates with that person as a “passenger”.
References from the canon
- Mentioned in Ministry leaflet on safety (HBP3).
- Albus Dumbledore used Side-Along Apparition to take Harry from Privet Drive to Budleigh Babberton (HBP4), and later to take him from Hogsmeade to the cave (HBP25).
- Harry used Side-Along Apparition to take Albus Dumbledore from the cave back to Hogsmeade (HBP27).
- Harry had thought Mad-Eye would come to number four, Privet Drive and take him away using Side-Along Apparition (DH3).
from "appareo" L. to appear