extremely high: ultrahigh skyscrapers of 100 stories.
Origin of ultrahigh
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for ultrahigh
Contemporary Examples of ultrahigh
Technophilanthropists: Today there are more than 1,400 billionaires and 93,000 “ultrahigh net worth” individuals in the world.The World Is Getting Better, Argues New Book, ‘Abundance’
February 21, 2012