Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

sponson

play
noun spon·son \ˈspän(t)-sən\

Definition of sponson

  1. 1a :  a projection (as a gun platform) from the side of a ship or a tankb :  an air chamber along a watercraft (as a canoe) to increase stability and buoyancy

  2. 2 :  a light air-filled structure or a winglike part protruding from the hull of a seaplane to steady it on water



Origin and Etymology of sponson

perhaps by shortening & alteration from expansion


First Known Use: 1835


Seen and Heard

What made you want to look up sponson? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to take off or remove

Get Word of the Day daily email!