"Airgraph" is a term that was commonly used during World War II and it refers to a type of airmail that was sent to soldiers and their families. Some synonyms for "airgraph" include: airmail letter, airmail message, airmail telegram, air message, air post, and air letter. These terms all generally refer to a type of mail that is sent via airplane. While the usage of airgraphs has diminished significantly since the end of World War II, the concept remains relevant in the form of airmail letters that are still sent between individuals, businesses and organizations across the world.