noun
Refers to a very tall building, typically a high-rise or skyscraper. Often used in news and formal contexts.
東京には多くの超高層ビルが立ち並んでいる。
Many skyscrapers stand in rows in Tokyo.
高層ビル is a general term for high-rise buildings, while 超高層ビル specifically refers to very tall skyscrapers, often over 100 meters.
Compound of 超高層 (chōkōsō, 'super high-rise') and ビル (biru, 'building'). 超高層 is itself composed of 超 (chō, 'super-') and 高層 (kōsō, 'high-rise').