Origin of ornithopter
"ornithopter." YourDictionary, n.d. Web. 20 October 2018. <http://www.yourdictionary.com/ornithopter>.
ornithopter. (n.d.). Retrieved October 20th, 2018, from http://www.yourdictionary.com/ornithopter
From ornitho- +"Ž -pter.
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