Media
来自Big Physics
late 19th century: shortening of modern Latin tunica (or membrana ) media ‘middle sheath (or layer)’.
wiktionary
Borrowed from Latin media, nominal use of the feminine of medius(“middle”, adjective).
Plural of medium, shortened form of communications media, reinterpreted as singular or mass noun; from Latin medium (plural media), nominal use of the neuter of medius(“middle”, adjective).
Shortening from multimedia
etymonline
media (n.)
"newspapers, radio, TV, etc." 1927, perhaps abstracted from mass-media (1923, a technical term in advertising); plural of medium (n.) as "intermediate agency," a sense attested in English from c. 1600. Also see -a (2).
