Kaasuilla

Kaasuilla is the adessive plural form of the Finnish noun kaasu, meaning gas. In Finnish, the adessive case marks location or context and is used with plural nouns to indicate “on/at” something or, in some constructions, “with” something. Therefore kaasuilla translates roughly as “on gases” or “at gases” and occurs primarily in scientific, technical, or linguistic contexts where multiple gases or a gaseous medium are being discussed. The form is not a separate lexical item but one of the standard inflected forms of kaasu.

Origin: The base kaasu is a loanword in Finnish, borrowed from German Gas (and possibly via Swedish gas). The inflected forms, including kaasuilla, are formed according to Finnish grammar rules.

Usage: In practice, kaasuilla appears in texts dealing with gas mixtures, atmospheric composition, or when indicating a context involving gases. Since it is a plural adessive, it tends to occur when speaking about multiple gases or about gas atmospheres rather than a single gas. The common noun form kaasu is used when referring to one gas, while kaasut refers to gases in general or multiple gases.