- (of a plastic) having been foamed during manufacture by the introduction of a gas in order to make a light packaging material or heat insulator: expanded polystyrene
WordReference Random House Unabridged Dictionary of American English © 2015
- increased in area, bulk, or volume;
enlarged:an expanded version of a story.
- spread out; extended:the expanded frontiers of the Roman Empire.
- PrintingAlso,extended. [Print.](of type) wider in proportion to its height. Cf. condensed (def. 4).
late Middle English;
see expand, -ed2