This is the 16672nd most frequent Russian word.
сильном
"Сильном" is the prepositional case form of the adjective "сильный," meaning "strong" or "powerful" in English.
The word "сильном" is used as an adjective in the prepositional case singular to describe the noun "духовном окружении" meaning 'spiritual environment'.
Он вырос в сильном духовном окружении.
He grew up in a strong spiritual environment.
The word "сильном" is used as an adjective in the prepositional case singular to describe the noun "конкуренции" meaning 'competition'.
Она работает в сильном конкуренции на рынке.
She works in strong competition in the market.
The word "сильном" is used as an adjective in the prepositional case singular to describe the noun "университете" meaning 'university'.