convertiplane

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con·vert·i·plane

also con·vert·a·plane  (kən-vûr′tə-plān′)
n.
An airplane having the ability to take off and land vertically, as by the use of large propellers that tilt upward to provide thrust.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

convertiplane

(kənˈvɜːtəˌpleɪn) ,

convertaplane

or

convertoplane

n
(Aeronautics) an aircraft that can land and take off vertically by temporarily directing its propulsive thrust downwards
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

con•vert•i•plane

(kənˈvɜr təˌpleɪn)

n.
an aircraft capable of vertical flight like a helicopter and forward flight like a conventional airplane.
[1945–50]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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