What does "full dress uniform" mean?

The most formal military uniform worn by a member of the military for a formal occasion, corresponding to the civilian white tie dress code.

What is a synonym for "full dress uniform"?

Common synonyms include: military uniform.

noun

noun ·Rare ·Advanced level

Noun

1
The most formal military uniform worn by a member of the military for a formal occasion, corresponding to the civilian white tie dress code. countable, uncountable