: 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
The electricity harvested from the vehicle skin can run onboard systems, recharge battery banks, and reduce the fuel needed for auxiliary generators. Aman Tripathi, Interesting Engineering, 29 Aug. 2026 Toby Haynes is onboard to executive produce and direct the series’ first episode. Michael Saponara, Billboard, 27 Aug. 2026
Phrase
The treatment of those on board betrays that promise—and it is not limited to just this one ship on this one very long deployment. Andrea N. Goldstein, The Atlantic, 28 Aug. 2026 The pilot was the only person on board at the time, and no others were involved. Steven Yablonski, CBS News, 28 Aug. 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 31 Aug. 2026.

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