convertiplane

or con·vert·a·plane, con·vert·o·plane

[kuh n-vur-tuh-pleyn]

noun

an airplane capable of both vertical flight like a helicopter and fast, forward speed like a conventional airplane.

Origin of convertiplane

First recorded in 1945–50; convert1 + -i- + plane1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for convertiplane

convertiplane

convertaplane or convertoplane

noun

an aircraft that can land and take off vertically by temporarily directing its propulsive thrust downwards
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