propulsion

noun

pro·​pul·​sion prə-ˈpəl-shən 

1

: the action or process of propelling

2

: something that propels

Examples of propulsion in a Sentence

Sailboats use wind as their source of propulsion.

Recent Examples on the Web

The aircraft features eight lift propellers and one propulsion propeller, allowing for a range of 125 miles (200 km) and 60 minutes of flying time on a full charge of its batteries. —Abhimanyu Ghoshal, New Atlas, 13 Oct. 2025

Featuring modernized propulsion, guidance, and command systems, it is expected to enhance survivability against evolving threats. —Neetika Walter, Interesting Engineering, 9 Oct. 2025

The Bolt’s upgraded batteries, motors and software align the vehicle with GM’s newer EVs like the GMC Hummer, Chevrolet Blazer EV or Cadillac Lyriq underpinned by the automaker’s proprietary Ultium propulsion system. —Jackie Charniga, Freep.com, 9 Oct. 2025

Amangati will be cleaner on the seas than classic, diesel-guzzling cruise ships, too, with a hybrid propulsion system that uses battery power to reduce emissions and improve efficiency. —Rachel Cormack, Robb Report, 7 Oct. 2025

Word History

Etymology

borrowed from Medieval Latin prōpulsiōn-, prōpulsiō "action of driving out or urging on," derivative, with the suffix of verbal action -tiōn-, -tiō, of Latin propellere "to push or thrust forward, compel to go onward" (with -s- from past participle and verbal noun prōpulsus) — more at propel

First Known Use

1627, in the meaning defined at sense 1

Phrases Containing propulsion

• jet propulsion
• self-propulsion

Rhymes for propulsion

• avulsion
• compulsion
• convulsion
• emulsion
• expulsion
• impulsion
• repulsion
• revulsion
• microemulsion

Kids Definition

propulsion

noun

pro·​pul·​sion prə-ˈpəl-shən 

1

: the action or process of propelling

2

: something that propels

propulsive

-ˈpəl-siv

adjective