ornithopter

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or·ni·thop·ter

(ôr′nə-thŏp′tər)

A machine shaped like an aircraft that is held aloft and propelled by wing movements.

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.

ornithopter

(ˈɔːnɪˌθɒptə)

(Aeronautics) a heavier-than-air craft sustained in and propelled through the air by flapping wings. Also called: orthopter

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

or•ni•thop•ter

(ˌɔr nəˈθɒp tər)

n.

a heavier-than-air craft designed to be propelled through the air by flapping wings.

[< French ornithoptère (1908) =ornitho- ornitho- + -ptère < Greek -pteros -pterous]

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Noun

ornithopter - heavier-than-air craft that is propelled by the flapping of wings

orthopter

heavier-than-air craft - a non-buoyant aircraft that requires a source of power to hold it aloft and to propel it

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Other topics include curvature analysis of conjugate surfaces via a tensor approach, dynamic analysis of an extendible support structure, determining optimal sizes for a ball-valve micropump channel, development of flapping ornithopters by precision injection molding, and a multi-dimensional model and version control method for small-batch production.