What is "romanitas"

Romanitas is the collection of political and cultural concepts and practices by which the Romans defined themselves. It is a Latin word, first coined in the third century AD, meaning Roman-ness and has been used by modern historians as shorthand to refer to Roman identity and self-image.

Romanitas is an alternate history novel by Sophia McDougall, published by Orion Books. It is the first of a trilogy of novels based on a world where the Roman Empire has survived to contemporary times and now dominates much of the world.