1. (in ethology) A specialized form of learning in which young animals, during a critical period (or sensitive period) in their early development, learn to recognize and approach some large moving object nearby. In nature this is usually the mother, though simple models or individuals of a different species (including humans) may suffice. Imprinting was first described by Konrad Lorenz, working with young ducks and geese. See learning in animals (Feature).

2. (in genetics) See gene imprinting.