: carried within or occurring aboard a vehicle (such as a satellite or an automobile)
an onboard computer
onboard recorders

on board

2 of 2

phrase

1
: aboard
2
: in support of a particular objective
needed to get more senators on board for the bill to pass

Examples of onboard in a Sentence

Adjective The car comes with an onboard computer.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
An onboard microgrid would coordinate the vehicle’s electrical systems. Aamir Khollam, Interesting Engineering, 16 Sep. 2026 According to the manifest, 134 people were onboard, 117 of them passengers and 17 crew. Aaron Favila, Los Angeles Times, 11 Sep. 2026
Phrase
Four years ago, Xi deferred Zhang’s retirement, keeping him on board to help manage the world’s largest and second-most-capable military. Jonathan A. Czin, The Atlantic, 14 Sep. 2026 Los Angeles Dodgers’ Mookie Betts and the Golden State Warriors’ Stephen Curry, both champions in their respective sports, are on board to produce. Rosy Cordero, Deadline, 14 Sep. 2026 See All Example Sentences for onboard

Word History

First Known Use

Adjective

1958, in the meaning defined above

Time Traveler
The first known use of onboard was in 1958

Browse Nearby Words

Cite this Entry

“Onboard.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/onboard. Accessed 19 Sep. 2026.

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