supertall

Adjective

 * 1) Extremely tall.

Noun

 * 1) A very tall building.
 * 2)  A building between 300m and 600m tall, approximately 1000ft to 2000ft tall. A tall building taller than a  but shorter than a.
 * 1)  A building between 300m and 600m tall, approximately 1000ft to 2000ft tall. A tall building taller than a  but shorter than a.

Usage notes
The uses this term to denote any building whose height exceeds 984 feet (300 metres).