also: ローマンてき
na-adjective
Refers to the Romantic school or movement in art, literature, or thought, not to romantic love. Often used in academic or cultural contexts.
彼の作品はロマン的な傾向が強い。
His works have a strong Romantic tendency.
ロマン的な風景画が展示されている。
Romantic landscape paintings are on display.
ロマンチック is the common word for 'romantic' in the sense of love or idealized emotion, while ロマン的 is specifically about the Romantic school/movement.
From French 'roman' (novel, romance) or German 'Roman', combined with the suffix 的 (-tic). The kanji spelling 浪漫 is ateji.