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ultrahigh

[uhl-truh-hahy] /ˌʌl trəˈhaɪ/
adjective
1.
extremely high:
ultrahigh skyscrapers of 100 stories.
Origin of ultrahigh
1945-1950
1945-50; ultra- + high
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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