Ornithopters

Part of speech: noun

Definitions

1. A type of aircraft that achieves flight by flapping its wings like a bird or insect while employing mechanical means for propulsion and control
2. A flying machine designed to mimic the flapping motion of wings, allowing for aerial movement similar to that of birds and insects
3. An aerial vehicle that operates through the flapping of wings, distinguishing itself from traditional fixed-wing aircraft and rotorcraft by its method of flight

Etymology: "Ornithopters" is the plural of "ornithopter", a flying machine that flies by flapping its wings, as birds and bats do. The name is a French-derived coinage built from Ancient Greek: "órnith-", the stem of "órnis" meaning bird, joined to "pterón", meaning wing. The same pair of roots gives "ornithology", the study of birds, and "pterodactyl", the winged reptile, so the word shares its ancestry with those familiar terms. The "-pter" ending is the notable part. It comes from the Greek word for wing, and it appears across scientific vocabulary, from "helicopter" to the insect order "Diptera", which means two-winged. A single Greek root for "wing" thus underlies a whole family of technical words, and "ornithopter" is one of the earliest members of that family to describe a machine rather than an animal.