határfelületét
The Hungarian word "határfelületét" translates to "its interface" or "its boundary surface" in English. It is a possessive form of the noun "határfelület," which itself is a compound word derived from "határ" meaning "border" or "boundary" and "felület" meaning "surface." Therefore, "határfelületét" specifically refers to the surface that separates two distinct regions, phases, or entities, with the possessive suffix indicating that this boundary surface belongs to or is associated with something previously mentioned.
In various scientific and technical contexts, "határfelületét" denotes the region where two different substances or systems