noun-modifying (irregular)
cultural; culture-oriented
Used attributively to describe things related to culture, often in contrast to science or sports. Common in compounds like 文化系クラブ (culture club) or 文化系女子 (cultured girl).
He belongs to a culture-oriented club.
A cultural event was held at the university.
Compound of 文化 (culture) and 系 (system/type). The exact historical derivation is uncertain, but it follows a common pattern for categorizing groups or fields.