Scriptura › Dictionary › Hydrobiplane 1 entry 1 source Hydrobiplane Open directly Webster's 1828 Dictionary · 1828 Part of speech: noun (n.) A hydro-aëroplane having two supporting planes.
1 entry 1 source Hydrobiplane Open directly Webster's 1828 Dictionary · 1828 Part of speech: noun (n.) A hydro-aëroplane having two supporting planes.