- (n.) A plane or any of a number of planes, projecting from the hull of a submarine boat, which by being elevated or depressed cause the boat, when going ahead, to sink or rise, after the manner of an aeroplane.
- (n.) A projecting plane or fin on a gliding boat to lift the moving boat on top of the water; also, a gliding boat.
- (v.i.) Of a boat, to plane (see Plane, below).
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). hydroplane. Retrieved September 21, 2026, from http://smartdefine.org/hydroplane/definitions/2018118 |
| Chicago | Webster's. 2011. "hydroplane" http://smartdefine.org/hydroplane/definitions/2018118 (accessed September 21, 2026). |
| Harvard | Webster's 2011, hydroplane, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/hydroplane/definitions/2018118>. |
| MLA | Webster's. "hydroplane" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/hydroplane/definitions/2018118> |