What is "thaification"

Thaification, or Thai-ization is the process by which people of different cultural and ethnic origins living in Thailand become assimilated to the dominant culture of Thailand, or more precisely, to the culture of the Central Thais.

Thaification was a step in the creation in the 20th century of the Thai nation state where Thai people occupy a dominant position, away from the historically multicultural kingdom of Siam. A related term, "Thainess", is held to describe a characteristic that persons and things possess when they are Thai.