#technical archaisms
- Avtolet — An archaic or regional hybrid term, used ephemerally in the first half of the 20th century (influenced by Slavic/Russian terminology), to designate an airplane, aircraft, or self-propelled flying machine. It represents an early linguistic attempt to name aerial vehicles, combining the Greek element 'avto' (self) with the Slavic root 'let' (to fly), quickly eliminated by the French-derived neologism 'avion'.