nounπShareThe act or process of expanding."The expansion of metals and plastics in response to heat is well understood."processbusinesseconomyessentialtoeicChat with AIVocabulary GamePractice Reading
nounπShareThe fractional change in unit length per unit length per unit temperature change."The expansion of the metal ruler was very small, only 0.00002 per meter per degree Celsius. "physicsmaterialenergysciencetechnicalessentialtoeicChat with AIVocabulary GamePractice Reading
nounπShareA new addition."My new office is in the expansion behind the main building."businesseconomyessentialtoeicChat with AIVocabulary GamePractice Reading
nounπShareA product to be used with a previous product."This expansion requires the original game board."businesscommerceitemessentialtoeicChat with AIVocabulary GamePractice Reading
nounπShareThat which is expanded; expanse; extended surface."The expansion of the school's playground provided a larger space for students to play. "areaamountspaceessentialtoeicChat with AIVocabulary GamePractice Reading
nounπShare(steam engines) The operation of steam in a cylinder after its communication with the boiler has been cut off, by which it continues to exert pressure upon the moving piston."The expansion of the steam in the cylinder pushed the piston, powering the machine. "technologyphysicsenergymachinetechnicalindustryessentialtoeicChat with AIVocabulary GamePractice Reading
