philately (n.)youdaoicibaDictYouDict
"stamp-collecting," 1865, from French philatélie, coined by French stamp collector Georges Herpin (in "Le Collectionneur de Timbres-poste," Nov. 15, 1864), from Greek phil- "loving" (see philo-) + ateleia "exemption from tax," the closest word Herpin could find in ancient Greek to the concept of "postage stamp" (from a- "without" + telos "tax;" see toll (n.)). A reminder of the original function of postage stamps, now often forgotten: the cost of letter-carrying formerly was paid by the recipient; stamps indicated it had been pre-paid by the sender, thus the letters were "carriage-free."
It is a pity that for one of the most popular scientific pursuits one of the least popularly intelligible names should have been found. [Fowler]
Stampomania (1865) also was tried. Stamp-collecting is from 1862. Related: Philatelic; philatelism; philatelist.
stamp (n.)youdaoicibaDictYouDict
mid-15c., "instrument for crushing, stamping tool," from stamp (v.). Especially "instrument for making impressions" (1570s). Meaning "downward thrust or blow with the foot, act of stamping" is from 1580s. Sense of "official mark or imprint" (to certify that duty has been paid on what has been printed or written) dates from 1540s; transferred 1837 to designed, pre-printed adhesive labels issued by governments to serve the same purpose as impressed stamps. German Stempel "rubber stamp, brand, postmark" represents a diminutive form. Stamp-collecting is from 1862 (compare philately).