follow Dictionary.com

Fiancé or fiancée? What's the difference?

ion propulsion

noun
1.
Rocketry. a projected type of propulsion for vehicles in outer space, the exhaust consisting of positive ions and negative electrons repelled from the vehicle by electrostatic forces, resulting in a very high exhaust velocity.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source

Word of the Day

Difficulty index for ion propulsion

Few English speakers likely know this word

Word Value for ion

3
4
Scrabble Words With Friends

Nearby words for ion propulsion