Electronics: To add or treat a pure semiconductor with an impurity (dopant) to change its electrical properties.
From Du. doop "thick dipping sauce," from dopen "to dip."
Âqârdan "to mix, to soak," cf. Sogdian wγyr- "to soak, steep," zγr "moisture," Ossetic qaryn "to permeate, seep through (of liquid)," Skt. ghar-, jigharti "to sprinkle, drip."