Hydro-aeroplane
Pronunciation : Hy"dro-a"?r*o*plane`. (A?ronautics)
Definition : Defn: An a?roplane with a boatlike or other understructure that enables it to travel on, or to rise from the surface of, a body of water by its own motive power.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder