an engine for powering an aircraft
I doubt if the muffler of an auto would cut down the sound of an aero engine to any appreciable extent.
Tom Swift and his Air Scout Victor Appleton
. Historical Examples This term is usually applied to aerofoil surfaces which dip downwards like the wings of a bird. The Theory and Practice of Model Aeroplaning V. E. Johnson The flexing or bending of an aerofoil out of its normal shape. The Theory and Practice of Model Aeroplaning V. E. Johnson The stretching of […]
a formed by the dispersion of air in a solidified matrix; a solid foam, as Styrofoam. Historical Examples A young woman pried loose another resin skull finial and added it to the pile, placed another sheet of aerogel on top of it. Makers Cory Doctorow noun a colloid that has a continuous solid phase containing […]
a sheet of lightweight paper, bearing an official postal stamp imprint, that is folded to form its own envelope and can be sent via airmail at a special, low rate because of its standard size, light weight, and lack of enclosures.
the study of the air or atmosphere. noun (archaic) the description of the character of the upper atmosphere