A Western-style (sitting) toilet, used by sitting on the seat; common in modern buildings and contrasted with squat (Japanese-style) toilets.
このホテルの部屋にはすべて洋式トイレが付いている。
All rooms in this hotel are equipped with Western-style toilets.
高齢者には洋式トイレの方が使いやすい場合が多い。
Western-style toilets are often easier for elderly people to use.
近年は公共の施設でも洋式トイレが主流になってきた。
In recent years, Western-style toilets have become the mainstream even in public facilities.