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

All that speed is powered by a fully hybrid propulsion system, which offers up both your conventional engines as well as electric motors and batteries. — Nicole Hoey, Robb Report, 14 July 2026

Mercury Marine focused on the vessel control and propulsion side of the project. — Aamir Khollam, Interesting Engineering, 14 July 2026

The move, followed by a new space policy in 2023, allowed startups to independently design, test and launch their own space technologies while also giving them access to ISRO's launch pads, propulsion test stands, and other facilities. — Sharmila Kuthunur, Space.com, 13 July 2026

Over the next several weeks, Katalyst will perform checkout procedures for Link, including assessments of its propulsion, sensor, and navigation systems. — Eric Berger, ArsTechnica, 10 July 2026

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