jumpmaster

[ juhmp-mas-ter, -mah-ster ]
/ ˈdʒʌmpˌmæs tər, -ˌmɑ stər /

noun

a person who supervises the jumping of paratroopers or other parachutists.

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Origin of jumpmaster

First recorded in 1940–45; jump + master
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020