Bubble

A bubble may refer to:

a pocket of air or gas caught within a solid or liquid
a spherical liquid film (often of surfactant, occasionally of bubble gum) filled with air or gas
a metaphor for isolation (e.g. 'living in a bubble')
a (normally) transparent dome
a metaphor for an unsound investment opportunity which may leave investors penniless when it "bursts", for example the South Sea bubble and Tulip Mania.
a light bulb of any type, in the theatre.

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Categories: Disambiguation