Why is it das Millionenpublikum?

Millionenpublikum is a compound noun, and German compounds take the article of their last word: das Publikum. So it’s das Millionenpublikum.

Sense 1
das

Meaning

[1] very large audience that counts after millions

[1] sehr großes Publikum, das nach Millionen zählt

Examples

[1] "This is often forgotten in the light of the overwhelming events, but long before he went into politics, Trump had already conquered the million audience as a market scout, which is now the basis of his power"

[1] „Man vergisst dies im Licht der sich überschlagenden Ereignisse gern, aber lange, bevor er in die Politik ging, hatte Trump als Marktschreier bereits das Millionenpublikum erobert, das nun Basis seiner Macht ist.“

Declension

1 Singular Plural
Nominativ das Millionenpublikum —
Genitiv des Millionenpublikums —
Dativ dem Millionenpublikum —
Akkusativ das Millionenpublikum —

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary