aerostatics

This term refers to a specialized field of physics and engineering. It is used almost exclusively in academic, technical, or scientific registers to describe the mechanics of gases in equilibrium, specifically regarding buoyancy and lift for balloons or airships.

Grammatically, the word ends in -ics, a common suffix for sciences (like physics or mathematics). Despite the plural appearance of the suffix, it is treated as a singular mass noun when referring to the field of study. It does not have a plural form because it describes a single body of knowledge.