aerogram

plural aerograms

1. datedA wireless message.

   An aërogram to the Examiner yesterday from Quito announced the success of the second attempt, and details of the achievement were at once secured.

   1890, “Our New Satellite”, in English Mechanic and World of Science: With which are Incorporated "the Mechanic", "Scientific Opinion," and the "British and Foreign Mechanic.", volume 50, E. J. Kibblewhite, page 499

2. datedrareA telegram whose transmission included at least one segment sent via airplane.

   Mr. Holt Thomas gave some details of a projected scheme of communication which combined the telephone or telegraph with the aeroplane. Messages sent by the system would be described as aerograms.

   1919, The Electrical Review, volume 84, H. Alabaster, Gatehouse & Company, page 538

3. A thin piece of foldable and gummed paper for writing a letter and serving as its own envelope for transit via airmail.
4. raremedicineA pneumogram.

   aerogram 1. A roentgenogram of an organ afer it has been injected with air; also called pneumogram.

   1935, William Alexander Newman Dorland, E. C. Miller, Illustrated medical dictionary, 17th edition, page 53

   Synonyms: airgram