Definitions for "Aerogramme"
The official Universal Postal Union designation for an air letter sheet. These sheets, with gummed flaps, are written on and folded into themselves to form their own envelope and are carried at less than the letter airmail rate. No enclosures are permitted.
A simple, lightweight letter sheet sold by the Post Office, pre-stamped for delivery worldwide. Sometimes, aerogrammes spot various commemorative or thematic illustrations.
a letter sent by air mail