vhodnom
Vhodnom is a transliteration of the Cyrillic form входном, the prepositional singular form of the Russian adjective входной, which roughly means "entry" or "entrance" and is used in contexts related to entry or access. It is not a separate lexical item on its own; rather, it is a grammatical inflection that appears in phrases with a noun.
In Russian grammar, adjectives agree with the nouns they modify in gender, number, and case. The form
Common contexts for appearances of входном include technical and administrative terms such as входной контроль (entry control) or descriptions
Overall, vhodnom is best understood as a transliterated grammatical form rather than an independent vocabulary item.