plural of support bubble

The perennial plant Agastache cana.

(mathematics) A conjecture in the theory of minimal surfaces, stating that the shape that encloses and separates two given volumes and has the minimum possible surface area is a "standard double bubble": three spherical surfaces meeting at angles of 2π/3 on a common circle.

plural of bubble company

(UK, slang, obsolete) A sham business that swindles people.

An arrangement between two (or more) countries, states, or other administrative regions, that allows free travel of residents between them while otherwise keeping their borders closed to travellers from outside the bubble.

plural of travel bubble

Alternative form of bubele

Alternative form of bubele

Empty-headed; foolish.