noun
apartment house; apartment building
A building containing multiple separate residential units. Often used in real estate or architectural contexts; in casual conversation, アパート or マンション are more common.
このエリアには新しいアパートメントハウスがたくさん建っている。
Many new apartment houses have been built in this area.
Variant with interpunct; less common in everyday writing.
アパート is the common everyday word for an apartment, typically a smaller wooden or low-rise building. アパートメントハウス is a more formal or technical term, often implying a larger or multi-story structure.
マンション usually refers to a modern, often high-rise condominium or apartment building, typically of reinforced concrete. アパートメントハウス is a broader term that can include both アパート and マンション, but is less frequently used in daily speech.
Loanword from English 'apartment house'.