Gasiform

Part of speech: adjective

Definitions

1. Relating to substances that exhibit characteristics resembling those of gases
2. Describing states or qualities that are typically associated with gaseous forms
3. Pertaining to substances or materials that exhibit the physical properties typical of gases

Etymology: "Gasiform" is a plain technical formation: "gas" joined to the suffix "-iform", which comes from Latin "-iformis", meaning "having the form or shape of". The combination describes something that has the form or character of a gas rather than being a gas itself, so the adjective is used for substances or states that behave like gases without necessarily being one. The suffix "-iform" is the same one found in words such as "cruciform" (cross-shaped) and "vermiform" (worm-shaped), where it attaches to a noun to describe shape. Here it takes the sense of "in the manner of", which is why "gasiform" can refer to a state of matter or a quality rather than a physical shape.