What does ornithopter mean?
An ornithopter is a flying machine inspired by birds, using the repeated flapping of its wings to produce lift and propulsion. The word covers both experimental aircraft and proposed designs, especially human-powered machines intended to imitate the movement of birds. It is also associated with early aviation drawings, including Leonardo da Vinci's studies of winged flight. Unlike a helicopter, which relies on rotating rotors, an ornithopter generates its movement by beating wings in much the same way as a bird. The term is uncommon in everyday conversation and appears mainly in technical, historical, and speculative discussions of aviation. It is especially memorable because it combines a straightforward description with an old ambition: building a machine that flies not by spinning blades or pushing against air with engines, but by moving its wings as living birds do.
nounA flying machine with wings that propel it by flapping, imitating the movement of a bird's wings. The term can refer to experimental aircraft as well as designs for human-powered flight.
- An aircraft or proposed flying machine that generates lift and thrust by flapping wings in imitation of birds.
"The engineers watched the experimental ornithopter rise above the test field on powerful, beating wings."
"Leonardo da Vinci's sketches included several ingenious ornithopter designs."
"The museum displayed a model ornithopter alongside early experimental aircraft from the age of human-powered flight."
The plural is used when referring to multiple ornithopters or to a class of such flying machines.
"Several ornithopters have been designed and tested, although sustained human flight remains a major challenge."
An ornithopter takes the most familiar form of flight as its blueprint: the repeated beating of wings.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does ornithopter come from?
The word was formed in English from Greek ornithos, meaning “bird,” and pteron, meaning “wing,” both of which appear in a group of English scientific terms. The compound refers directly to a wing-beating flying machine and was used for real experimental designs as well as imagined forms of flight. Its related English words include ornithology and ornithologist, while pterosaur and pterodactyl share the Greek element for “wing.”
How ornithopter is actually used
The word is relatively uncommon and usually occurs in technical, historical, or speculative contexts. It most often refers to experimental machines or conceptual designs rather than ordinary aircraft.
Easily confused with ornithopter
A helicopter is lifted and propelled by rotating rotors, whereas an ornithopter imitates bird flight through flapping wings.