glider
Word family
Synonym discussion
Sense: noun/1
These three terms all describe unpowered flying craft, but they differ in design and how the pilot rides. A 'glider' (or 'sailplane') is a fixed-wing aircraft with a cockpit where the pilot sits inside an enclosed body; 'sailplane' is the more technical term for high-performance gliders used in competitions. A 'hang glider' has a triangular fabric wing with the pilot hanging below in a harness, steering by shifting body weight. A 'paraglider' uses a soft, parachute-like fabric wing (no rigid frame) and the pilot sits in a harness suspended underneath. All three rely on rising air currents to stay aloft, but a glider/sailplane can travel much farther and faster because of its aerodynamic design.
Etymology
The word 'glider' is formed from the verb 'glide' (to move smoothly and continuously through the air) plus the agent suffix '-er,' meaning 'something that glides.' The verb 'glide' comes from Old English 'glīdan,' which traces back to the Proto-Germanic root '*glīdaną' (to glide, to slide). The noun entered English use in the early 15th century for anything that glides, and was specifically applied to engineless aircraft in the late 19th century as aviation technology developed.