noun, plural hy·dro-skis.
a hydrofoil attached to a seaplane to aid in takeoffs and landings.
Origin of hydro-ski
First recorded in 1950–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a hydrofoil used on some seaplanes to provide extra lift when taking off
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012