also: エクスパンション
noun, noun-modifying (irregular)
Loanword from English 'expansion', used in technical, business, or gaming contexts to refer to growth, enlargement, or an add-on.
このゲームのエキスパンションには新しいマップが追加された。
New maps were added in this game's expansion.
企業の海外エキスパンションが急
The company's overseas expansion is progressing rapidly.