TCK definition

TCK    Third Culture Kid

An individual who, having 
spent a significant part of the 
developmental years in a 
culture other than the parents' 
culture, develops a sense of 
relationship to all of the 
cultures, while not having 
full ownership in any. Elements 
from each culture are 
incorporated into the life 
experience, but the sense of 
belonging is in relationship to 
others of similar experience.

(Department of Defense, Diplomatic Corps, International Business,  Missionary Kids) ©1988. David C. Pollock. Interaction. Inc.