Definition of "onboard"

onboard

/ɑnˈbɔɹd/

adjective
not comparable
1. Carried or used on or in a vehicle or vessel.
2. (by extension, figurative) Being a part of, being included in, participating in.
adverb
not comparable
1. On or in a vehicle or vessel; aboard; on board.
verb
third-person singular simple present onboards, present participle onboarding, simple past and past participle onboarded
1. (figurative) To become a part of a group; to incorporate (someone) into a group.
2. (figurative) To begin to use a product or service; to take (someone) on as a new customer of a product or service.