philately

noun

The collection and study of postage stamps, postmarks, and related materials; stamp collecting.

noun

The fancy for collecting and classifying postage-stamps and revenue-stamps as objects of curiosity; also, the occupation of making such collections.

noun

The collection of postage stamps of various issues.

noun

Stamp collecting.

noun

The study of postage stamps, postal routes, postal history, etc.

noun

the collection and study of postage stamps