hapettavaan
The Finnish word "hapettavaan" is the illative plural form of "hapettava," which itself is the present active participle of the verb "hapettaa." The verb "hapettaa" means to oxidize or to oxygenate. Therefore, "hapettavaan" can be translated as "into the oxidizing" or "into the oxygenating" when referring to multiple things or entities. The illative case in Finnish indicates movement into something.
In a scientific or technical context, "hapettavaan" might refer to the process of oxidation or oxygenation.
Understanding the grammatical function of "hapettavaan" requires knowledge of Finnish morphology, specifically the formation of participles