Is radio in a glossary?

glos·sa·ry
ˈɡläsərē,ˈɡlôsərē
noun
an alphabetical list of terms or words found in or relating to a specific subject, text, or dialect, with explanations; a brief dictionary.
~ google.com

ra·di·o
ˈrādēō
noun
1. the transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages.
"cellular phones are linked by radio rather than wires"
verb
1. communicate or send a message by radio.
"the pilot radioed for help"
~ google.com