ionogram
/ʌɪˈɒnəɡram/noun
1 Chemistry and Medicine. A record or image produced as the result of an ionographic separation, typically a series of spots or bands on the support medium.
2 Atmospheric Physics. A graphical record of the data transmitted by an ionosonde.
- The data are typically presented in the form of a plot of virtual height of the ionosphere against transmitted frequency..
Origin
1950s; earliest use found in Journal of the American Chemical Society. From iono- + -gram, in sense 1 after ionography.