Word: onboard
Part of speech: Adjective
Syllables: on
board
Definition: Carried or used on or in a vehicle or vessel
Morphemes:
Affix: on-
Language: en
PoS: Prefix
Meaning: on, at, toward, upon.
Affix: board
Language: en
PoS: Verb
Meaning: To step or climb onto or otherwise enter a ship, aircraft, train or other conveyance.