Origin of deltiologyfrom Classical Greek deltion (dim. of deltos, tablet for writing) + -ology
The collection and study of postcards.
Origin of deltiologyFrom Greek deltion diminutive of deltos writing tablet, letter
Formed by suffixing the Ancient Greek δελτίον (deltion) (deltion; the diminutive form of δέλτος (deltos), deltos, “writing tablet”) with the English -logy.