mission specialist

mission specialist

noun U.S. Aerospace.
the crew member of a space shuttle who is assigned primary responsibility for carrying out operations related to the payload of the shuttle.

Origin:
1975–80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Mission specialist is always a great word to know.
So is callithumpian. Does it mean:
a chattering or flighty, light-headed person.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
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