What does "professional class" mean?

A social and economic demographic, commonly identified as part of the upper middle class.

What is a synonym for "professional class"?

Common synonyms include: professionals, technocrats, yuppies.

noun

noun ·Rare ·Advanced level

Noun

1
A social and economic demographic, commonly identified as part of the upper middle class.
2
The groups in society composed of highly educated professionals. in-plural