an airplane with one main sustaining surface or one set of wings.
Nautical. a planing craft the bottom of which is in an unbroken fore-and-aft line.
Origin of monoplane
Related formsmon·o·plan·ist, noun
First recorded in 1905–10; mono-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for monoplane
Historical Examples of monoplane
The total weight of the monoplane with engine and propeller is 352 pounds.
Now the tendency in France seems to be to go back to the monoplane.
The monoplane, a one-surfaced plane, like that used by Bleriot.
Why we just dumped you into the monoplane here and then got aboard ourselves and off we went.
"You two stay here and guard this monoplane," exclaimed Jacques.
British Dictionary definitions for monoplane
an aeroplane with only one pair of wingsCompare biplane
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
Word Origin and History for monoplane
1907, a hybrid coined from mono- + second element of aeroplane. In old planes the wings formed a single surface running across the fuselage.
Online Etymology Dictionary, © 2010 Douglas Harper