rotunda

Etymology

Learned borrowing from Latin rotunda, from Sancta Maria Rotunda (the name for a church in the Pantheon), from rotundus (“round”).

noun

1. (architecture) A round building, usually small, often with a dome.
2. (typography, frequently capitalized) A Gothic typeface used in early printed books in Northern Italy, based on a rounded script developed in the 13th cent.; the manuscript hand on which this typeface was based.
3. (Philippines) A roundabout; a road junction at which traffic streams circularly around a central island.
4. (geometry) A form of cupola that has pentagons rather than squares or rectangles.