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deltiology
The hobby of collecting post cards.
This entry is located in the following unit:
-ology, -logy, -ologist, -logist
(page 19)
The collection and study of postcards: Deltiology has no reference to the deltic muscle. It comes from Greek deltion, "little writing tablet" and it comes from Greek deltos, "writing tablet"; so, it is presented so you will know that it has nothing to do with the other words in this delta unit.