follow Dictionary.com

What is the X in X-mas?

posigrade rocket

[poz-i-greyd] /ˈpɒz ɪˌgreɪd/
noun, Rocketry.
1.
an auxiliary rocket used to separate the sections of a multistage rocket, fired in the direction of flight.
Origin
1960-1965
1960-65; posi(tive) + -grade (perhaps modeled on retrograde)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source

Word of the Day

Difficulty index for posigrade rocket

Few English speakers likely know this word

Word Value for posigrade

0
0
Scrabble Words With Friends