posigrade

adjective

posi·​grade
ˈpäzəˌgrād
: relating to, using, or being an auxiliary rocket that imparts additional thrust to a spacecraft in the direction of motion

Word History

Etymology

positive + -grade (as in retrograde)

First Known Use

1961, in the meaning defined above

Time Traveler
The first known use of posigrade was in 1961

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Dictionary Entries Near posigrade

Cite this Entry

“Posigrade.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/posigrade. Accessed 15 Apr. 2024.

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