UI density is the value a user gets from the interface divided by the time and space the interface occupies.
UI Density
I speak and write about design, front-end code, leadership, and (occasionally) math.
https://matthewstrom.com/writing/ui-density/

information density
Ask HN: What are good high-information density UIs (screenshots, apps, sites)? | Hacker News
Search engines are full to the brim with vague articles repeating each other's talking points, and exception being this blog post by Matthew Ström: https://matthewstrom.com/writing/ui-density/
https://news.ycombinator.com/item?id=43925732

Seonglae Cho