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

L3Harris claimed that its Integrated Platform Management Systems (IPMS) provides integrated monitoring and control of ship propulsion, electrical functions, auxiliaries and damage control machinery and systems. —Prabhat Ranjan Mishra, Interesting Engineering, 9 May 2026

Quantum is developing some elements of the spacecraft, but sourcing others from industry, including some of its propulsion capabilities. —Eric Berger, ArsTechnica, 7 May 2026

To top it off, the X-Shinobi yachts are equipped with hybrid diesel-electric propulsion systems, ensuring a quiet and fume-free cruising experience for guests while helping to reduce the environmental impact of marine tourism. —Rachel Cormack, Robb Report, 1 May 2026

The fire knocked out electricity and propulsion on the destroyer, one of the officials told CBS News, speaking under condition of anonymity because they weren't authorized to speak publicly. —CBS News, 30 Apr. 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