aero

Aero is a term derived from the Greek word aēr, meaning air. In English it is used both as a prefix and as a standalone name across multiple contexts. As a prefix, aero- appears in terms such as aerodynamics, aerospace, aerosol, and aerology, tying its usage to air, atmosphere, and aviation.

As a brand or product name, Aero most prominently refers to a chocolate bar produced by Nestlé, originally Rowntree's. The bar is known for its aerated, bubbly texture and has been marketed in various flavors and markets since its United Kingdom introduction in 1935.

In computing, Windows Aero denotes a design language associated with Microsoft Windows Vista and Windows 7. It featured translucent window borders, glass-like effects, and advanced animations to create a glossy, three-dimensional appearance. Over time, Windows Aero was phased out as newer user interfaces supplanted it.

Beyond these uses, the term aero often appears in branding to evoke lightness, speed, or air-related associations. It is employed across industries and products to convey performance, modernity, or a sense of airiness, making it a versatile label in marketing and design.