Focus on the pronunciation of expand
English definition of “expand”
/ɪkˈspænd/ v [I/T]
› to increase something in size, number, or importance: [I] The air in the balloon expands when heated. [T] They expanded their number of stores significantly in the 1990s. expansion
/ɪkˈspæn·ʃən/ n [U] › Expansion into new areas of research might be possible.