(uncountable) Modern or contemporary ideas, thought, practices, etc. / (countable) Anything that is characteristic of modernity.

The quality of being modern or contemporary. / Modern times. / (history) Quality of being of the modern period of contemporary historiography.

The process of modernizing.

(transitive) To make (something old or outdated) up to date, or modern in style or function by adding or changing equipment, designs, etc.

plural of modernity

plural of modernness

Of or relating to the Streamline Moderne school of architecture.

plural of modernization

plural of modernism

Somebody who lives in the modern age.